NATIVE
PLANTS
Grown at Summer Hill Nursery
At
Summer Hill, we've been growing "native plants" for over twenty-five
years - starting with Clethra, Ilex and Viburnum, etc. Now that the
environmental movement has pushed use of "natives" into the forefront,
we feel it's time to write specifically about the ones we grow.
First, we had to consider what is a 'native plant". For this pamphlet,
we decided on plants found in the wild in the northeastern part of the
United States and eastern Canada. Also included are plants found in
the higher mountain areas of the Southeast, plants that are hardy in
New England and may have been native here before the last ice age.
Plants in the latter category are marked with
+. Plants
that we do not have available every year are marked with
x.
Hardiness ratings are either Wyman's or Michael Dirr's with some of
my own observations. Source is the location of the original plants or
cuttings, although current propagation is from production plants or
stock plants at Summer Hill.
All of the plants on this list are grown for "Garden Center Quality".
For mitigation projects, we can grow plants of a lesser quality at reduced
prices if given a year's notice.
Hope you enjoy reading this - get after me if you feel I'm wrong about
anything.
Native Plants Grown at Summer Hill Nursery
Acer pensylvanicum , Striped Maple
This is a relatively small understory tree of our northern forests with
fairly large leaves that give good fall color. However, its main attribute
is its bark. On young wood, the bark is bright green with vertical white
stripes which are very striking. Generally 10 to 15 feet in height but
not that wide, Striped Maple has yellow to yellow-green flowers in the
spring that can be quite noticeable. It should have some shade, especially
in warmer climates. Hardiness: Zone 3 to 7. Source: Northern Maine.
Acer spicatum, Mountain Maple
This is another understory tree that does not get too large. It has
yellowish green leaves in the summer that give good fall color. Its
main attribute, for me, is the fruit, which is a very noticeable samara
hanging from the branch tips during the month of August. If the tree
is in a relatively sunny spot, these can be quite striking. The height
is approximately 10 to 20 feet - prefers some shade but will adapt to
a fair amount of sunshine. Hardiness: Zone 3 to 6. Source: Northern
Maine.
Amelanchier canadensis, Shadblow Serviceberry
This tree is adaptable to a wide range of habitats from wet swampy areas
to dry uplands and is very evident in seashore locations, especially
in Rhode Island where large colonies exist. It is identifiable from
other Amelanchier species for it suckers quite freely. The white flowers
in the spring are followed by red berries in June. Its good fall color
and extremely desirable smooth gray bark make this a "must plant" in
native plant gardens. Its height will be 10 to 20 feet depending on
the location. It will survive shady areas but will flower best in full
sun. Hardiness: Zone 3 to 7. Source: Purchased seed and plants.
X Amelanchier laevis,
Allegheny Serviceberry
The description of A. laevis is very similar to that of Amelanchier
canadensis except it grows more as a tree without suckering and will
probably grow 5 to 10 feet taller, especially in wooded areas. Amelanchier
arborea, laevis, canadensis are all native to our area, and it is my
feeling that they probably have hybridized to some extent and are very
hard to tell apart. They are all good plants for a native plant garden.
Hardiness: Zone 3 to 7. Source: Purchased seed and plants.
Amelanchier stolonifera, Running Serviceberry
Amelanchier stolonifera stays quite low, in the 4 foot range, and can
spread wider than high. Its flowers, foliage and fruit are typical of
Amelanchier. This is a fascinating small shrub that is a beauty when
in bloom, and it does very well in full sun. Hardiness: Zone 4. Source:
Not sure - possibly from Tom Dilatush.
Andromeda polifolia, Bog Rosemary
This is a wonderful, low groundcover shrub with evergreen blue foliage
and pink flowers in the spring. Bog Rosemary definitely needs to be
grown in moist areas. It will take some shade but prefers full sun as
long as it is kept damp. It actually thrives in sphagnum bogs in northern
New England and Canada. Its height will be perhaps 6 to 8 inches and
its width is extended as it spreads through underground root stock.
Hardiness: Zone 2 to 6. Source: Cape Breton Island, Nova Scotia.
Arctostaphylos uva-ursi, Bearberry
This is a very low growing, prostrate shrub that will spread primarily
downhill and root down as it goes. The evergreen leaves are a very dark
lustrous green tinged with burgundy red, especially in the fall. The
tiny white bell-shaped flowers in the spring are followed by red berries.
It likes dry, sandy soil and can thrive quite well in hostile environments
as long as its roots remain quite dry. Although this plant is very common
in seashore communities, especially on Cape Cod, it can also be found
at high elevations in mountains out West. It needs to be planted in
full sun to be at its very best. Hardiness: Zone 2 to 6. Source: Purchased
from Cape Cod.
Aronia arbutifolia, Red Chokeberry
This is a good size hardy shrub with umbel white flowers that produce
bright red berries later in the summer. It has very good leaf color
in the fall. It will grow approximately 8 feet in height and perhaps
half that in width. It can tolerate both wet or dry soils. Full sun
exposure will give the best berry set. Hardiness: Zone 4 to 9. Source:
Tom Dilatush.
Aronia x prunifolia, Purplefruited Chokeberry
This is almost identical to Aronia arbutifolia - probably a hybrid of
A. arbutifolia and A. melanocarpa (Black Chokeberry). Aronia prunifolia
has purple rather than red fruit. Hardiness: Zone 4 o 9. Source: Tom
Dilatush.
Asarum canadense, Canada Wild Ginger
This plant is a herbaceous perennial with dark green, but not shiny,
leaves that stand 4 to 6 inches above the soil. It has typical ginger
flowers which are very hard to see below the leaf canopy. Although the
literature says it prefers shade, we have some growing in full sun,
which do as well as the plants in the shade and perhaps even better.
A carpet of Asarum around boulders can be a striking sight in the native
plant garden. Hardiness: Zone 2 to 7. Source: Not sure.
+ Asarum shuttleworthii, Mottled
Wild Ginger
This is a very low growing, small leaf groundcover plant. It is different
from European Ginger in that the leaves have "veins" throughout them
giving a mottled effect. It does not cover an area as rapidly as Asarum
canadense and could be used in areas where a single, very low growing
plant is desirable. It prefers shade but can tolerate some full sun.
Hardiness: Zone 5. Source: Purchased.
X Asimina triloba, Common Pawpaw
Although an understory tree that can grow between 15 to 20 feet tall,
this tree actually does very well in full sun. Small purple flowers
are evident in early spring and fairly large, 4 to 5 inches long, fruit
are borne in the fall. This fruit is edible and is indeed quite tasty.
The leaves are fairly large and turn a pleasant yellow in the fall.
This tree gives a different (almost tropical) appearance than most others
and contrasts with other trees in a native plant situation. Hardiness:
Zone 5 to 8. Source: Purchased seed and plants.
X+ Azalea atlanticum,
Coast Azalea
This and the following deciduous azaleas should probably be listed as
rhododendrons since azaleas are truly rhododendrons. However, we have
always listed them "azaleas" and will continue to do so. Azalea atlanticum
gives a bluish-green effect when in leaf and grows to 6 feet high with
a rather erect habit. It does sucker and will spread by that manner.
The flowers are predominately white, fading to pink. It is an understory
plant that likes well drained soil. It should be noted that the flowers
are extremely fragrant. Hardiness: Zone 5 to 8. Source: Purchased seed
X Azalea calendulaceum, Flame Azalea
This is another upright growing deciduous azalea, growing perhaps as
wide as high and reaching a height of 8 feet. The flowers are quite
spectacular ranging from a yellow to orange and red. It is quite spectacular
when in bloom and brings a good bit of color to the native garden. It
likes good drainage and rich peaty soil. Hardiness: Zone 5 to 8. Source:
Purchased seed.
Azalea nudiflorum, Pinxterbloom Azalea
This is another upright shrub-type azalea, an understory plant that
tends to get fairly open with a dainty habit of growth. The clear pink
flowers with red stamens are very attractive in a subdued, not gaudy,
manner. The mature plants will probably grow 6 to 8 feet in height and
about that wide in good locations. We discovered a plant locally with
a darker pink flower that is very attractive, and we are listing it
as Azalea nudiflorum 'Deep Pink'. Hardiness: Zone 4 to 8. Source: Ivoryton
and Madison, Connecticut
X Azalea roseum (prinophyllum), Roseshell Azalea
This is very similar to A. nudiflorum, becoming a slightly larger plant
with somewhat more substantial appearing flowers. The variety 'Marie
Hoffman', no doubt a triploid, has very large pink flowers and is extremely
fragrant, even more so than the type plant. Hardiness: Zone 4 to 8.
Source: Purchased seed, 'Marie Hoffman' from Ludwig Hoffman Nursery
- originally a "collected" plant from North Carolina.
Azalea viscosum, Swamp Azalea
An upright growing azalea, this differs from the others since it prefers
damp, boggy areas and is usually found on the edge of sphagnum swamps
and perhaps growing on hummocks within the swamp. It will survive growing
in drier areas, but does not thrive there as well as in areas that are
extremely wet. Fragrant white flowers are found in late June to early
July and can be quite striking. We discovered a plant in a location
next to our nursery that has light pink flowers, and we've named this
one 'Pink Mist'. It should be noted that Azalea viscosum is quite salt
tolerant. The plants growing near salt water tend to have bright shiny
green leaves whereas plants growing more inland have glaucous leaves
and produce a heavier, stronger plant. Hardiness: Zone 4 to 8. Source:
Madison, Connecticut and Rhode Island (near a salt pond).
Cephalanthus occidentalis, Buttonbush
This is a rounded, upright shrub generally growing to 4 to 6 feet with
round white flowers that are about the size of a marble. Buttonbush
likes wet areas and can even be found in standing water. Hardiness:
Zone 5 to 10. Source: Madison, Connecticut
+ Cercis canadensis,
Eastern Redbud
A small to medium size tree, Redbud tends to branch close to the ground
making a rounded globe appearance. It has a good looking leaf and a
fairly good fall color, but its main attribute is the rosy pink flowers
growing up and down the branches, even coming from the trunk of the
tree, that appear in early spring. When in bloom, Cercis canadensis
is one of the most beautiful trees in our native landscape; however,
it should be used judiciously in New England. Although it is listed
as hardy to Zone 4, I have lost one tree and had extensive damage to
another from minus 7¡ temperatures. Seed source is very important -
only plants grown from northern seed sources should be attempted in
New England. It is worth the effort, however, as this tree is spectacular
when doing well. Hardiness: Zone 5 (?) to 9. Source: Purchased seeds.
Chamaecyparis thyoides, Atlantic Whitecedar
This wonderful evergreen tree with fairly thin wispy foliage is at its
best when grown in standing water or on the very edge of swampy areas.
It can grow 40 to 50 feet high and has indeed been used as a timber
tree in the past. White Cedar swamps of any size have an aura all their
own and can be quite majestic. One of the best is at Marconi Station
at the National Seashore on Cape Cod. It is well worth the hike to it.
We grow several varieties of C. thyoides, including dwarf forms, but
the ones for naturalistic plantings would be either the green foliage
type or the glaucous type, both of which occur in native stands. Hardiness:
Zone 4 to 8. Source: Madison, Connecticut.
Chamaedaphne calyculata, Leatherleaf
In general, this is a rather open, ugly little evergreen shrub that
has green leaves in the summer but turn brown in the winter. It does
have interesting small urn-shaped flowers typical of ericaceous plants
and can be found growing in and around standing water. We grow two named
varieties here that are different since they are compact plants with
lots of flowers that give an extremely nice appearance when in bloom
in the spring . One is called 'Tiny Tom' and the other is 'Dew Drop'.
These will have landscape value for damp areas as well as the possibility
of using them in naturalistic settings. We are also starting to grow
a clone that stays green all winter but with the open rangy effect of
the native plant. Hardiness: Zone 3 to 5. Source: Northern Maine and
Tom Dilatush for compact varieties.
X+ Chionanthus
virginicus, White Fringetree
This can become quite a large spreading tree reaching 15 to 20 feet
in height and the same in width. With a good size green leaf, some specimens
have excellent yellow fall coloring. The flowers are white, soft textured
panicles that are spectacularly beautiful. The flowers on the male plants
tend to be larger and more striking than on the female plants. The fruit
is a dark blue drupe that reminds me very much of a small ripe olive.
Hardiness: Zone 4 to 8. Source: Purchased plants and collected seed
from same.
+ Clethra acuminata,
Cinnamon Clethra
This is a small tree that can reach a height of 15 to 20 feet. The flower
is typical of Clethra: that is a white terminal raceme. The leaves take
on a yellow color in the fall that is quite pleasing. However, it is
the bark of this tree, which looks like a cinnamon stick, that sets
it apart and makes it a valuable addition to the native plant garden.
Unlike Clethra alnifolia, it prefers dry, sandy locations rather than
damp soil. Hardiness: Zone 5 to 7. Source: Purchased plants.
Clethra alnifolia - Varieties, Sweet Pepperbush
Clethra alnifolia is one of the first native plant species we grew.
We now grow ten named varieties, differing in growth habit and flower
color. The flower of the type plant is a white, fragrant, upright terminal
raceme - it blooms in mid-summer. Clethra alnifolia likes damp areas
on the edge of swamps and streams. It is an excellent plant for naturalizing
these areas and is quite attractive to bees and butterflies - Clethra
honey is reputed to be one of the best honeys there is. We can now provide
plants that will stay within 3 to 4 feet in height ('Compacta'), as
well as the type plant that can grow 6 to 8 feet tall. Flower colors
range from a good deep pink on 'Ruby Spice' to pure white on the type
plant and 'Ann's Bouquet', Hummingbird', etc. Clethra alnifolia will
spread from suckers and can cover quite an area. Some varieties tend
to sucker more than others. This is also a salt tolerant plant. The
variety 'Ann's Bouquet' was found within 50 feet of a salt pond and
is one of the nicest growing clones we have. Hardiness: Zone 4 to 9
although 'Hummingbird' and 'Sixteen Candles', coming from Georgia, may
be a bit more tender. Source: Madison, Connecticut, Rhode Island, and
purchased plants for some varieties.
Comptonia peregrina, Sweetfern
As evidenced by its common name, Comptonia has fernlike leaves and looks
like a type of fern, but it is indeed a shrub. It usually grows 2 to
4 feet high and can spread indefinitely as it suckers profusely. The
leaves are a good dark green turning brown in the fall without much
fall color. Sweetfern can grow in extremely dry conditions but can be
found in damp areas as well - it is quite adaptable. Hardiness: Zone
2 to 7. Source: Madison and Deep River, Connecticut.
X Corema conradii, Broom Crowberry
A very small, approximately 1 foot tall, evergreen shrub with tiny leaves
only about 1/4 inch long. Corema produces a very interesting groundcover-type
plant for acid soils in and around rocky areas. Hardiness: at least
as far North as Zone 3. Source: Tom Dilatush - New Jersey.
Cornus alternifolia, Pagoda Dogwood
This is a nice horizontally branching tree that doesn't get too large,
perhaps 15 to 20 feet. The relatively small flowers are inconspicuous,
and the dark purple to black fruit does not make much of a show either.
But it is its horizontal habit and clean foliage that make it an interesting
tree to blend in with more vertical types. Hardiness: Zone 3 to 7. Source:
Purchased liners.
Cornus amomum, Silky Dogwood
Cornus amomum is somewhat similar to Cornus alternifolia with a slightly
more rounded form. Once again, the flowers and fruit are not spectacular,
but it can be useful in damp areas where an understory tree of its nature
is needed. Remember, it does like more water than most of the other
dogwoods. Hardiness: Zone 4 to 8. Source: Purchased liners.
Cornus florida, Flowering Dogwood
A description of Cornus florida should not be necessary, but a few notes
follow. Cornus florida does have its problems - older plants can be
attacked by anthracnose, the disease Discula destructiva, and both old
and young plants are susceptible to powdery mildew. Over the years though,
I have noticed quite a difference in the susceptibility to mildew on
seedings in our area, and in the future I hope to do some work trying
to raise clones that will resist mildew more than others. Although Cornus
florida is rated as a Zone 5 plant for hardiness, you should check the
original source of plants you buy. Trees from southern sources may survive
in New England, but the flower buds are invariably blasted by our winters.
The Cornus florida we grow here are from seeds collected locally. Source:
Madison, Connecticut.
Cornus sericea, Redosier Dogwood
This is a shrub dogwood with a multi-stem habit growing up to perhaps
10 feet and maybe even taller. The flowers are not terribly noticeable;
but the fruit, later in the summer, are white round drupes that can
be quite spectacular, especially when they are borne in profusion in
certain years The stems on Cornus sericea are one of its important attributes
as they turn a brilliant scarlet red in the winter, standing out against
any snow cover in a very dramatic way. The stems and new wood are basically
green in the summer, turning red in the fall. I believe I've found one
that stays red all summer, but it needs to be trialed a few more years.
Cornus sericea likes a good bit of moisture and can be found on stream
banks and bogs. It is an excellent plant to use for stream bank stabilization.
Hardiness: Zone 2 to 6. Source: Northern Maine.
+ Decumaria barbara,
Wood Vamp
Wood Vamp, or Wild Hydrangea Vine, another of its common names, is a
vine that has dark green, very lustrous leaves and white flowers in
early summer. It is usually found in shady spots and in moist areas
- moisture is indeed necessary for this plant to do well. Acid soil
with high organic matter is also desirable. It can grow up to 20 feet
into trees and has aerial root-like tendrils - a very beautiful but
not too rampant vine. Hardiness: Zone 5 to 9. Source: Purchased plants.
Diervilla species, Bush-honeysuckle
All the Diervillas are fairly low growing shrubs, usually 3 feet or
less, with yellow flowers in mid summer. Diervilla lonicera, a northern
native, tends to sucker quite profusely and will cover a fairly large
area in a short amount of time. Diervilla rivularis and Diervilla sessilifolia,
both coming from the Southeast, have larger yellow flowers than D. lonicera
and tend to grow a bit taller and do not sucker quite as much. They
seem to grow equally well in sun or shade and all make excellent understory
shrubs. Hardiness: Diervilla lonicera Zone 3 to 7. Diervilla rivularis
and sessilifolia Zone 4 to 7. Source: Diervilla Lonicera - Wilbraham,
Massachusetts. Diervilla rivularis and sessilifolia - Purchased plants.
X Dirca palustris, Leatherwood
A heavily branched, dense rounded shrub with pale yellow flowers blooming
in early spring, this is basically an understory plant that grows to
between 2 and 6 feet tall. It has very interesting branches and bark
- the branches are quite flexible and the bark definitely has a leathery
feel to it. It needs plenty of moisture and will be happy on stream
banks and water courses in wooded areas. Hardiness: Zone 4 to 9. Source:
Purchased plants.
Euonymus atropurpureus, Eastern Wahoo
This is a small tree that can grow to approximately 20 feet in height.
The bark and leaves are similar to Euonymus alatus 'Compactus' although
the fall color is not as striking. While the flower is fairly inconspicuous,
the seed capsule in the fall is very interesting and attractive. Hardiness:
Zone 4 to 9. Source: Purchased plants.
X Euonymus obovatus,
Running Euonymus
This is a deciduous shrub that, as the common name implies, runs along
the ground and rarely gets more than 12 inches high. It has green leaves
and small, but interesting, light green flowers. Seed capsules that
open to expose red seeds in the fall are also quite interesting. Hardiness:
Zone 3 to 7. Source: Purchased plants.
FERNS
Adiantum pedatum, Common Maidenhair Fern
This is a native of eastern North America and must be grown in moist,
loose soil and should have a good bit of shade. It can become 12 to
24 inches tall.
Athyrium filix-femina, Lady Fern
This is a native of central and northeastern North America. It can produce
fronds of 15 inches in width and 18 to 36 inches in height. A relatively
easy one to grow, it still requires a good deal of moisture and would
like some shade.
Dennstaedtia punctilobula, Hayscented Fern
This is one of the most successful ferns to use in the home landscape.
It spreads quite readily with underground runners and can form quite
a ground cover if the area remains moist enough. It can take full sun
and will make quite a show with its light, feathery type foliage which
grows 18 to 24 inches tall. Because of its stoloniferous habit, it can
become a weed and get into areas not wanted, but where a fern ground
cover would be desirable, it is an excellent plant. The pleasant fragrance
that gives it its name can be very noticeable on hot summer days. It
can take considerably dryer conditions than most of the other ferns
we grow.
Dryopteris cristata, Toothed Wood Fern
This native of eastern and central North America is also called Crested
Wood Fern, as well as Crested Shield Fern. It has narrow feathery fronds
that grow about 30 inches tall. These can possibly be evergreen in the
southern part of its range, including protected spots in southern New
England. It requires a moist location and can take sun as well as part
shade.
Onoclea sensibilis, Sensitive Fern
Sensitive Fern is a nice little fern that we have recently added to
our fern collection. It grows in wet areas, will take full sun and grows
between 12 and 30 inches tall. Sensitive Fern has spore cases on stems
that turn a dark purplish-brown and when dry can be used in dried flower
arrangements. It is a neat, little, moisture loving fern that can grow
in full sun - the fronds being its main attraction.
Osmunda cinnamomea, Cinnamon Fern
This native of North America can do well in several types of soil; however,
it does require a good bit of moisture and some shade. In the right
conditions it can become 5 feet tall, although 2 to 3 feet is more normal.
Its sporing body, cinnamon color, standing sometimes over a foot tall
like a huge cinnamon stick from the center of the plant, makes this
an extremely interesting fern.
Osmunda regalis, Royal Fern
Royal Fern is a bit different than most other ferns in that its leaflets
are oblong instead of pointed. They actually look more like those of
a locust tree rather than a fern. However, the overall shape of the
plant is fernlike. It prefers areas that are damp to wet. Although I've
read that Royal Fern can grow to 6 feet, it is usually found in the
3 to 4 foot range.
Polystichum acrostichoides, Christmas Fern
The fronds of this one are evergreen and can be about 10 inches wide
and up to 3 feet in length although usually much smaller. It likes quite
a bit of shade, otherwise its leaves will tend to be very pale instead
of deep green. Christmas Fern can take upland conditions as long as
the ground remains moist. A friable, peaty, woodsy-type soil is what
it requires. It is very valuable for landscape use.
Peteretis nodulosa, Ostrich Fern
This plant has two botanical names - the other one sometimes used is
Matteuccia pennsylvanica. This is another very tall fern. If entirely
happy in the wild, it can grow as high as 10 feet - you can really get
lost in a mass of them. However, in cultivation, 4 to 6 feet would probably
be maximum and then only if planted in fairly ideal conditions - quite
wet with good peaty soil. It spreads by runners; therefore, it can cover
an area within a short period of time.
Hardiness: All ferns are hardy in New England. Source: Purchased plants
- mostly New Hampshire.
+ Fothergilla gardenii,
Dwarf Fothergilla
This plant has become so popular as a landscape plant that we tend to
forget it is native to eastern United States. It is a rounded shrub
that can grow to 6 to 8 feet in height with equal width. Small witchhazel-type
leaves are a good dark green in the summer but are fantastically multi-colored
in the fall, running from light yellow to orange-red to purple. The
flowers are a white bottlebrush-type in mid spring. Although it prefers
acid soil, it will accept a wide range of soil types and conditions.
It is an excellent plant for any native plant garden. Hardiness: Zone
4 to 8.
Source: Purchased plants.
+ Fothergilla major, Large Fotergilla
This is very similar to Fothergilla gardenii except it is a larger plant,
growing to possibly 10 feet in height with not quite that much spread.
Hardiness: Zone 4 to 8. Source: Purchased plants.
Gaylussachia brachycera, Box Huckleberry
This is a wonderful little evergreen shrub growing only 6 to 18 inches
high. It will spread indefinitely through underground root stock and
produce a solid mat in an area where it is happy. This plant has typical
urn-shaped ericaceous-type flowers, in the spring and has bluish fruit
later in the summer. To be happy it should be in acid soil that is very
loose and well drained - good drainage is very important. While the
leaves are a good dark shiny green throughout the summer, some with
a reddish cast, it is in the fall when this plant is at its best as
its leaves turn bright scarlet and purple. This is especially true when
the plants are in full sun. Some clones have better color than others,
and the clone we are growing at present is truly spectacular. Hardiness:
Zone 5 to 7. Source: Tom Dilatush - West Virginia
X+ Halesia tetraptera
(Carolina), Carolina Silverbell
This can become a large tree, 30 to 40 feet in height, and perhaps 20
feet in width. Dark green leaves have some fall color but are not too
spectacular. Its bell shaped white flowers in the spring make this a
very interesting, desirable tree both in native plantings and for landscape
use. It prefers well drained acid soil and will do best in full sun.
Hardiness: Zone 4 to 8. Source: Purchased plants. Note: Both H. carolina
and H. monticola are considered to be the same species and are grouped
as Halesia tetraptera. We also grow a pink flowering form named 'Arnold
Pink'.
Hamamelis virginiana, Common Witchhazel
This is a many stemmed sub-shrub that can get quite large - 15 to 20
feet in height and diameter is not at all uncommon. It is very soil
tolerant and can do reasonably well in shady areas although the better
plants will be produced in full sun. In late fall, the threadlike yellow
flowers are not terribly noticeable except on a few clones that drop
their leaves before the flowers open. It is an excellent large filler
shrub for native plantings. Hardiness: Zone 3 to 8. Source: Purchased
plants.
Hydrangea arborescens, Smooth Hydrangea
A many stemmed shrub growing approximately 4 feet in height and perhaps
a bit wider, it suckers very freely from its roots and can cover quite
a large area. This plant is known in the nursery trade primarily from
its cultivar 'Annabelle' which has large, infertile petaled flowers.
However, the flowers of the type plant are light green to white and
being fertile do not have the petals that 'Annabelle' has. It likes
well drained, but moist, soil and will respond well to a sunny location
although it can also thrive in the shade. Hardiness: Zone 3 to 9. Source:
Arnold Arboretum.
Hypericum kalmianum & Species, St. Johnswort
This is a relatively small shrub with bluish-green foliage growing to
perhaps 3 feet high and 3 feet wide. Yellow flowers borne in profusion
in mid-summer make this a very desirable plant. It prefers dry, well
drained soil; however, it will tolerate most soil conditions. Hardiness:
Zone: 4 to 7. Source: Purchased plants.
Ilex glabra, Inkberry
A rounded shrub with glossy evergreen foliage, this is a many stemmed
plant with a mounded character growing perhaps to 8 feet in height and
width. Like other hollies, it is dioecious - the female plants produce
black berries in profusion in the fall. This has become a very popular
landscape plant with many new varieties entering the market - 'Compacta'
being one of the best known, growing only perhaps to 6 feet in height
and width. Varieties such as 'Nigra' and 'Shamrock' have darker green
foliage than the type. It prefers full sun - growing rather thin and
scraggly in shaded areas. It also likes damp soil and at times can be
found on the edge of bogs - acid soil is preferable. Hardiness: Zone
4 to 9. Source: Tom Dilatush, type plant. Purchased plants for other
varieties.
Ilex opaca, American Holly
Almost everyone knows of American Holly with its large spiny, sometimes
lustrous, leaves and red berries on female plants in the fall. American
Holly, when not trimmed to a pyramid as is generally done in the landscape,
can grow to a tree of 40 to 50 feet in height and with a width of perhaps
20 to 30 feet. It does well under normal soil conditions - moist, acid
soil is preferable as is a sunny location. Although plants will survive
in the shade, this makes a thinner, more open plant. In most areas,
deer will leave American Holly alone, therefore, making it a valuable
evergreen for native plantings in deer infested areas. There are many
named varieties on the market, some are hardier than others, and care
should be taken to avoid plants grown in southern climates. The female
clone we are growing at the present time was given to us by Tim Gastler
of Durham, Connecticut. Where the original source of that plant is,
I am not sure. The male we are growing is from a chance seedling here
at the nursery and seems extremely hardy. Hardiness: Zone 5 to 9. Source:
See above.
Ilex verticillata - varieties, Common Winterberry
Along with Clethra, Ilex verticillata was one of the first native plants
we grew in any type of quantity. It's now well known in the nursery
trade with many named varieties available. It's a shrub that can grow
to perhaps 10 to 15 feet in height. Dark green deciduous leaves are
followed, on the female plant, with many, many red berries up and down
the stems making a spectacular show in autumn and well into winter.
Winterberry is a plant of wet, swampy areas but will do reasonably well
under dry conditions. Acid soil is definitely preferable. Full sun will
give a much heavier berry set than a shady area, but the plant will
thrive quite well in the shade. Many varieties are in the trade now,
most differentiated by blooming time, berry size, and quantities of
berries. We have introduced one named 'Kennebago' which grows much,
much slower than the usual plant, taking many years to reach a height
of 3 to 4 feet. Ilex verticillata 'Compacta', which is now called 'Red
Sprite', will usually top out at approximately 8 feet. This is a must
for naturalistic plantings of any size in the Northeast. Hardiness:
Zone 3 to 9. Source: 'Kennebago' - northern Maine. 'Red Sprite' - Ludwig
Hoffman, origin southern Massachusetts. 'Jolly Red' - Ludwig Hoffman,
Bloomfield, Connecticut. Others, Purchased plants.
+ Itea virginica,
Virginia Sweetspire
This is a nice medium size, many stemmed shrub growing approximately
4 feet tall that can spread, forming relatively large colonies. It has
clean, nice green leaves, and the flowers, blooming in early summer,
are white upright racemes - they are fragrant and make quite a show.
This plant is thought of more as a landscape plant rather than for use
in native plantings, but it would be a fine addition to native plantings
especially in moist and even wet areas, although it will also do quite
well in dry spots. We grow two named varieties here: 'Henry's Garnet'
which is similar to the type plant and 'Merlot', which is more compact
- maturing at probably not much over 3 feet. There are many other varieties
on the market today; however, we found that some are quite tender and
care should be taken if planted in New England. Hardiness: Zone 5 to
9. Source: Purchased plants.
Juniperus communis, Common Juniper
This is a very hardy, low growing evergreen shrub with feathery foliage.
Along with Juniperus virginiana, it is one of the first plants to come
into an abandoned field producing plants between approximately 6 feet
in diameter and only about 3 feet in height. There is tremendous variation
in the color and plant habit. This plant can also be found in high,
dry rocky areas and at other times right down next to the salt water
near the sea. It is a very hardy and adaptable plant. We are offering
two clones at the moment from a group of plants from Nova Scotia selected
by Tom Dilatush. One we have named 'Nova Scotia' that grows quite rapidly,
very dense, and stays close to the ground but will send branches up
approximately 12 to 15 inches. The second one named 'LaHave' grows much
slower than 'Nova Scotia' and is more compact. Both are good plants
for either the native plant garden or for landscape use. Hardiness:
Zone 2 to 6. Source: Tom Dilatush - LaHave Island, Nova Scotia.
Juniperus horizontalis, Creeping Juniper
Anyone reading this should know Juniperus horizontalis from its many,
many clones offered in the trade. It is native in North America from
Nova Scotia to British Columbia, a creeping glaucous plant that is happy
in many locations, growing between rocks in gravelly soil and in some
cases very close to salt water. Indeed, one of the clones we grow, 'Bar
Harbor', comes from Mt. Desert Island in Maine. The other, 'Blue Rug'
(Wiltoni), was discovered by J. C. van Heiningen of Wilton Nursery,
Connecticut. Hardiness: Zone 4 to 9. Source: See above.
Kalmia angustifolia, Sheep Laurel
This is a nice, low growing (1 to 3 feet) semi-evergreen shrub. It is
at its best in early summer when its stems are covered with pink flowers,
making quite a show on a fairly good size plant. It is very tolerant
of many different types of soil conditions. I've found it growing out
of moss in very wet areas, but also it can be found in dry, well drained
sandy slopes. We grow plants from three clones here: one named 'Hammonasset'
was found near the Hammonasset River here in Madison, Connecticut by
Dick Jaynes over forty years ago. It is a low growing form with quite
glaucous leaves, quite compact, with darker than usual pink flowers.
Two other clones come from plants I collected in northern Maine: one
I named 'Kennebago' which has the same dark pink flower as 'Hammonasset'
but on a much more vigorous and upright growing plant. Another named
'Poke Logan' has a bit larger leaf and is a faster growing form with
light pink flowers. All three will do well in a native plant garden
and will add a good bit of color to the garden when in flower in early
June. Hardiness: Zone 1 to 6. Source: See above.
Kalmia latifolia, Mountain Laurel
Not much needs to be said about this plant for it is very well known
as it is Connecticut's state flower. It has dark green lustrous leaves
with large pink to white flowers in June making this a spectacular plant
either in a native plant garden or for landscape use. It is somewhat
adaptable to soil types as long as there is good drainage. I've found
this plant growing in road cuts with purely mineral soil and also in
rich humus in forest areas. Although it will grow quite well, making
fairly large plants in shaded understory situations, plants in full
sun will produce more flowers. Heavy flowering is usually in alternate
years unless the plants are deadheaded, which is unlikely in a naturalistic
setting. We grow many of the new named varieties of Kalmia latifolia,
but for naturalistic settings, we usually recommend either 'Hoffman's
Pink' or 'Hoffman's K' which are very close to plants usually found
in the wild. Hardiness: Zone 4 to 9. Source: Ludwig Hoffman - Bloomfield,
Connecticut and purchased plants for other varieties.
X+ Leiophyllum buxifolium, Box Sandmyrtle
This is a small shrub, staying perhaps 1 1/2 feet tall and 3 to 4 feet
wide, with very small, shiny dark evergreen leaves that become bronze
in the winter. The flowers that arrive in June are white with a tinge
of pink. It likes peaty but not overly wet soil - a nice, low growing
little shrub. Hardiness: Zone 5 to 7. Source: Pine Barrens, New Jersey.
+ Leucothoe catesbaei
(fontanesiana), Drooping Leucothoe
This plant and its named varieties are used so extensively in landscape
plantings that sometimes we forget it is native to the southeastern
United States. Lustrous, evergreen leaves with varying amounts of purple
make this a beautiful evergreen shrub. The arching branches have white,
urn-shaped flowers hanging from them in mid-spring. The type plant can
grow to approximately 6 feet high and at least that in width. However,
the form we grow, 'Compacta', will not grow nearly that large, staying
in the 3 foot by 4 foot range, and has superior mahogany-red color in
the winter. Leucothoe axillaris is a similar plant with slightly smaller
leaves and a lighter red color in the fall. It is not quite as hardy
as Leucothoe catesbaei. Both of these plants want the same conditions
as rhododendrons - good peaty soil that is moist but not overly wet.
The leaves are somewhat susceptible to wind damage in exposed locations
in the winter. Hardiness: Leucothoe catesbaei Zone 5 to 8; Leucothoe
axillaris Zone 6 to 8. Source: Purchased plants.
Lindera benzoin, Spicebush
This is a fairly large, open shrub growing in very moist conditions,
including swampy areas. It is tolerant of shade and makes a good understory
plant for wet areas. Lindera benzoin is one of the first plants to bloom
in the spring with small, greenish-yellow flowers - always a welcome
sight after a tough winter. Plants in shady areas rarely set much fruit,
but those that get quite a bit of sun will produce red berries later
in the summer - well berried plants are quite attractive. Hardiness:
Zone 4 to 9. Source: Madison, Connecticut.
Lonicera sempervirens, Trumpet Honeysuckle
This is a twining vine with round to oval leaves, 1 to 3 inches long
and perhaps two-thirds of that wide. The flowers range from clear yellow
to orange and red, making quite a show in late spring to early summer.
Fortunately, it is not as an aggressive a vine as Bittersweet or Japanese
Honeysuckle and should be quite acceptable for most native plant gardens.
We grow some named varieties of this plant: 'Alabama Crimson' is a darker
red than the usual type; 'John Clayton' and 'Sulphuria' are both yellow;
'Manifich' is a very good orange with a clear yellow throat. Hardiness:
Zone 4 to 9. Source: Purchased plants and Tom Dilatush ('Manifich').
X+ Magnolia macrophylla,
Bigleaf Magnolia
This is a large coarse tree with extremely large leaves. The leaves
can be as much as 2 feet long and 10 to 12 inches in width and can give
the tree, when in leaf, a tropical appearance. The flowers are spectacular
- I measured one this spring that was 15 inches across. Rose colored
fruits in late summer to early fall produce seed that is pink, which
is another interesting aspect of this magnificent tree. It appreciates
moist, but not wet, soil and needs plenty of room to grow. Hardiness:
Zone 5 to 8. Source: Seed from trees in Connecticut.
Magnolia virginiana, Sweetbay Magnolia
A wonderful small tree or large shrub, Sweetbay Magnolia prefers very
moist, actually wet, areas although I know from experience it will survive
quite dry situations as well. It is different from most Magnolias in
that it requires acid soil. Light green leaves are not very large -
they persist into late autumn. The creamy white flowers that are approximately
2 to 3 inches in diameter appear throughout the early summer and produce
a very pleasant lemon scented aroma. Dark red seed follicles in the
fall can be abundant enough to make a nice show. The variety 'Henry
Hicks' is an evergreen form. Hardiness: Zone 5 to 9. Source: Purchased
plants. Current source: Seed from a tree at the nursery that has survived
-18¡ with no damage.
Myrica gale, Sweetgale
This is a great plant for wet areas. It produces a shrub that will get
no more than 4 to 4 1/2 feet tall and slightly more than that wide.
It has relatively small leaves that range from bluish-green to deep
green in color. The stems are dark reddish-brown and give a nice effect
in winter. The flowers are inconspicuous. This is an excellent plant
for controlling erosion on the side of ponds or on stream banks. I know
our Rhode Island clone is extremely salt tolerant. Hardiness: Zone 1
Source: Clones from Northern Maine, Michigan, Rhode Island and Alaska.
Myrica pensylvanica, Northern Bayberry
This is a plant that can take many different conditions and will produce
plants that are quite variable, responding to these situations. It is
extremely salt tolerant and can grow in sandy dune-type soil very close
to the water's edge. In those conditions it usually stays relatively
short, growing 2 to 3 feet in height. Further inland, where it is happy
on rather dry sandy slopes, it can produce plants that range to 6 feet
or more in height. The leaves are rather small, averaging about 2 inches
in length, shiny and very dark green with a good bit of mahogany hue,
especially in the fall and early winter. This is a persistent leaved
plant and will hold its leaves well into the winter. The berries on
female plants are waxy, gray, and cover the stems on female plants.
The berries are a staple food of tree swallows on their migration pattern
heading south. Bayberry is very useful in stabilizing dunes and other
difficult areas. Hardiness: Zone 3 to 6. Source: Seed from Rhode Island.
Nemopanthus mucronatus, Mountain Holly
This little know plant is native to northern New England. The female
plants produce red berries in August, making quite a show at that time
of year. It likes relatively damp areas and is generally found within
20 to 25 feet of lakes or streams. It can reach a fairly large size,
growing 6 to 7 feet tall and at least that in width. Hardiness: Zone
4 to 6. Source: Northern Maine
Oxydendrum arboreum, Sourwood - Sorrel Tree
This is an ericaceous tree that can grow to a fairly large size - 25
to 30 feet in height and approximately 20 feet in spread. Its fairly
large leaves, 3 to 8 inches long, are lustrous dark green in the summer
and turn a beautiful mahogany in late summer and fall. The flowers in
late summer are an ericaceous type, white urn shaped flowers forming
beautiful drooping panicles. These can cover the tree to an extent that
the foliage is barely seen - truly a magnificent sight. It likes the
same soil conditions as rhododendrons and other ericaceous plants -
moist, peaty, acid, well drained soil is ideal. Hardiness: Zone 5 to
9. Source: Seed from trees at the nursery.
+ Pachysandra procumbens
, Allegheny Pachysandra
This is a deciduous to semi-evergreen groundcover that spreads by rhizomes.
It has fairly large, 2 to 4 inch long, leaves - predominately toothed,
very similar to Pachysandra terminalis; however, they are dull deep
green, somewhat veined. The flowers on this Pachysandra can be quite
spectacular in the spring; they are 2 to 4 inch spikes of white flowers
rising from the base of the stems. It is quite adaptable, and we have
plants growing in very shady locations but also some that receive a
good amount of sun. All in all, it is an excellent groundcover that
likes light, organic, well-drained soil. Hardiness: Zone 4 to 9. Source:
Unknown.
Parthenocissus quinquefolia, Virginia Creeper
This is a deciduous vine with tendrils that can spread along the ground
or climb whatever it encounters: trees, fences, walls, etc. The leaves
have five compound, palmate leaflets - they are light green in summer
and turn bronze-red in the fall. Indeed, it is in the fall when this
plant makes its best show. It is distinguished from poison ivy, which
it tends to accompany, by the fact that it has five compound leaflets
as opposed to three for poison ivy. It is happy growing in almost any
type of soil and is a good plant for covering unsightly areas. Hardiness:
Zone 3 to 9. Source: Madison, CT.
X+ Paxistima canbyi,
Cliff Green
This wonderful little groundcover has small, deep green leaves that
are usually about 1/2 inch long and about 1/4 inch wide. Once established,
this plant will spread by underground stems and above ground stems that
touch the soil. It will very rarely get as high as one foot and can
spread indefinitely if it is in a location it likes. It prefers well
drained soil and indeed is a plant that tends to thrive on neglect in
inhospitable places. Its flowers are not particularly showy, but its
evergreen leaves make it a desirable groundcover. Hardiness: Zone 3
to 7. Source: Purchased plants.
Pinus strobus, Eastern White Pine
Everyone should know this magnificent tree, so I won't say much except
that it should be planted where it gets a good deal of sun, full sun
being best. It will tolerate not only dry soil but also damp, very wet,
conditions. It should be in an acid soil, and it is intolerant of air
pollutants, such as ozone and sulfur dioxide. It is definitely not salt
tolerant. As well as the type plant, we grow many of its clones, dwarf
types, and one that might do well in a native plant situation where
a narrow, tall evergreen tree is desired - Pinus strobus 'Fastigiata'.
Hardiness: Zone 3 to 7. Source: Purchased plants.
Potentilla tridentata, Wineleaf Cinquefoil
This is a wonderful little low growing groundcover plant that seems
to seek out difficult areas to grow; i.e. between crevices in rock ledges.
It has dark green, lustrous, compound leaves which are evergreen except
in the most severe locations. Its white flowers are borne above the
leaf canopy in early summer. It rarely gets more than 6 to 8 inches
in height - generally much less. It likes acid soil and prefers to be
on the dry side. This is a wonderful little groundcover and should not
be overlooked. There are wonderful specimens growing between the rocks
on Mt. Desert Island in Maine. Hardiness: Zone 2 to 7. Source: Tower
Hill Botanic Garden.
Prunus maritima, Beach Plum
Beach Plum is a rounded, dense suckering shrub that can grow to 6 feet
in height. It is extremely salt tolerant and is very happy growing in
almost pure sand on the secondary dunes, slightly away from the ocean.
Areas like Cape Cod in Massachusetts are its favorite sites. White flowers
in spring can turn this basically ugly duckling of a plant into a thing
of beauty for a short period of time. Its fruit in the fall is useful
for making jams and jellies. Being salt tolerant is its major attribute.
Hardiness: Zone 3 to 6. Source: Cape Cod.
+ Prunus pumila
depressa, Creeping Sand Cherry
As its name implies, this is a rather rapid growing groundcover form
of Prunus. It produces a heavy, only 12 to 18 inch high, cover of shiny
leaves in the summer but leaves a rather coarse tangle of bare branches
in the winter. It has white flowers in the spring and black berries
in the fall and is very adaptable to soil types. It is useful to rapidly
cover areas of rubble, etc. Hardiness: Zone 2 to 7. Source: Arnold Arboretum.
Rhododendron canadense, Rhodora
This is a deciduous rhododendron that grows in the swamps and boggy
areas of Canada and northern New England. Not a large plant, it rarely
reaches 3 feet in height and width. The bloom is rosy-purple, flowering
before the leaves appear in early May. Rhodora grows in the same type
of location as Myrica gale and Chamaedaphne in northern bogs and, like
them, could become a nice addition to wet areas in a natural plant garden.
Hardiness: Zone 2 to 7. Source: Northern Maine.
Rhododendron groenlandicum, Labrador Tea
This relatively small evergreen shrub grows in the same type of location
as Rhodora although it likes slightly drier conditions. It too rarely
reaches 3 feet in height and width. White flowers can cover the plant
in early summer making quite a show, and its dark green leaves with
hairy undersides make it a nice plant for moist areas. It can tolerate
a good bit of shade, although sunny areas will produce a much better
flower set. This plant was formerly known as Ledum groenlandicum. Hardiness:
Zone 2 to 6. Source: Northern Maine
Rosa carolina, Pasture Rose
A rather coarse, upright plant growing 3 to 6 feet high and suckering
quite freely, its erect branches can form dense thickets in almost any
kind of soil. Single pink flowers, up to 2 1/2 inches across, bloom
in early summer, and some flowering exists throughout the summer into
early fall. Red fruit persists through the fall and winter. It can tolerate
and even enjoy wet areas and edges of swamps. Hardiness: Zone 4 to 9.
Source: Purchased plants.
Rosa virginiana, Virginia Rose
This is very similar to Rosa carolina, but its reddish canes and glossy
dark green leaves make it a more attractive plant. It is quite tolerant
of salt conditions and does very well in sandy soil. Hardiness: Zone
3 to 7. Source: Purchased plants.
Salix discolor, Pussy Willow
This is a shrub that loves wet soil - edges of streams and even swampy
areas. It can grow to a height and width of 20 feet although it usually
stays smaller. It's not a bad looking shrub in the summer with fairly
glossy small to medium size leaves, but it is in the spring when the
gray catkins are very evident that the plant is at its best. These catkins
are formed by the male flowers on the willow. Hardiness: Zone 2 to 8.
Source: Madison, Connecticut.
XSambucus pubens, Scarlet Elder
A rather coarse large shrub growing 12 to 25 feet high with equal spread.
It flowers early in the summer with 5 to 6 inch long panicles. While
the flowers are quite noticeable, it is the scarlet berries in mid-summer
that make this plant an outstanding addition to the native plant garden.
A plant covered with these red berries can be quite a sight. Birds eat
the fruit that is supposedly poisonous to humans. Not fussy as to soil
type, it is generally found in rocky, dry areas and does best at high
elevations that provide a cooler climate. Hardiness: Zone 2 to 6. Source:
Northern Maine.
Spiraea latifolia, Meadowsweet
This is a small shrub, growing to perhaps 4 feet in height and less
than that in width. Meadowsweet does best in relatively moist, sandy
soil and thrives on sandy beaches around ponds and lakes. It has white
to pink flowers in mid-summer and can be quite attractive at that time.
Hardiness: Zone 3 to 5. Source: Northern Maine.
Spiraea tomentosa, Hardhack
This is very similar to Spiraea latifolia, growing in similar conditions,
although it tolerates more moisture than S. latifolia. Its prominent
flowers are a good deep pink on tight upright panicles - interesting
in that they open from top to bottom which is unusual for this type
of flower. Hardiness: Zone 3 to 6. Source: Northern Maine.
XTaxus canadensis, Canadian Yew
This species of Taxus has typical dark green Taxus foliage. Growing
wider than high and relatively open, it is definitely an understory
plant that thrives in moist, shady locations. Taxus canadensis likes
sandy, well drained soil and cannot stand excessive heat or winter sun.
It should be avoided if deer browsing is a problem. Hardiness: Zone
2 to 6. Source: New York State.
Thuja occidentalis, Northern White Cedar
Another common name for this plant is Eastern Arborvitae, and it is
well known in the landscape trade for its many cultivars. The type plant
can grow 40 to 60 feet in height with about a 10 to 15 foot spread.
It is generally found in wet areas and very often provides the first
layer of evergreen trees around a pond or lake in northern New England,
backed up by the spruce and fir which grow further inland. If it is
used in a native planting, some protection is necessary until it gets
8 to 10 feet in height since it is a favorite browse of deer. Indeed,
in northern Maine, deer yards are generally found in stands of Thuja
occidentalis. Along with Chamaecyparis thyoides, this plant makes a
fine specimen for wet, swampy areas. Hardiness: Zone 3 to 7. Source:
Northern Maine.
Vaccinium angustifolium - myrtilloides, Lowbush Blueberry
This is a wonderful little groundcover that is not too fussy as to soil
type. It has shiny leaves on a plant that will never get much over 18
inches tall, generally much less. It can grow in very poor sandy soil
such as on the edge of sand pits and other barren areas. Urn shaped,
white flowers are produced in early summer followed by small blueberries
in August. These are the berries that are best for making blueberry
pie. Vaccinium myrtilloides grows intermingled with Vaccinium angustifolium,
and although the leaves are a bit different, it is almost impossible
to distinguish them from each other We grow plants from the seed of
berries harvested in southern Maine. These plantings include both V.
angustifolium and myrtilloides, but they both provide the same form
of groundcover. Hardiness: Zone 2 to 5. Source: See above.
Vaccinium corymbosum, Highbush Blueberry
This is a very nice looking shrub with glossy green leaves that turn
spectacular colors in the fall, some turning a rich, dark mahogany color.
It can be found upland in open fields that are quite dry, but it is
most happy in wet, boggy areas where the soil is peaty and acidic. Plants
can reach 6 to 8 feet in height with perhaps the same width although
they are generally smaller than that. White, urn shaped flowers in early
summer produce very delicious berries in mid summer. Many selected cultivars
and hybrids are on the market, and these produce berries of somewhat
phenomenal size. The native plants have berries that are much smaller
than the plants commercially produced. We sell both named varieties
and the type plant. Hardiness for the type plant: Zone 3 to 7. Source:
Madison, Connecticut.
Vaccinium macrocarpon, American Cranberry
This plant, which produces the cranberries used for cranberry jelly,
makes an excellent very low growing groundcover, growing only 2 to 4
inches in height and spreading indefinitely as it roots down readily
from its stems. The leaves are quite small, only 1/4 to 1/2 inch long,
and very narrow. They are evergreen, dark green in the summer, and turn
dark red to purple in the winter - very attractive. Pink flowers are
not really showy in the spring but, of course, the large berries in
October make quite a show. It likes peaty, moist soil and is quite salt
tolerant. I have found it growing in almost pure sand near a salt pond
in Rhode Island. It can survive some shade; however, it does best in
full sun. Hardiness: Zone 2 to 6. Source: Rhode Island.
X Vaccinium vitis-idea
minus, Mountain Cranberry
This is a tiny little evergreen plant growing primarily in alpine-type
conditions. It likes peaty, well drained soil. Its leaves are very small
and though bright green in summer turn a deep mahogany color in winter.
It produces red berries, but they are usually not that noticeable. Its
main attribute is its shiny evergreen leaves and as a filler for rocky
areas. Hardiness: Zone 2 to 6. Source: Unknown.
X Viburnum alnifolium,
Hobblebush
This is an understory plant of our northern forests, generally growing
close to lakesides as it likes moist conditions. The branches root when
they touch the ground, producing structures that are very easy to trip
over, hence, its common name. It has large, oval 4 to 8 inch long leaves.
The flowers are flattop, 3 to 5 inch diameter cymes, that are white
and are produced in late spring - the fruit turns from red to purple
in September. In most ways, it is a rather coarse plant in appearance
although its leaves give it quite an effect. Hardiness: Zone 3 to 5.
Source: Northern Maine.
Viburnum cassinoides, Withrod Viburnum
Viburnum cassinoides is different from most viburnums in that it has
bright shiny leaves. They are only about 2 to 3 inches long and about
half that in width. V. cassinoides makes a very nice looking shrub growing
to perhaps 8 to 10 feet in height. It has typical viburnum flowers in
early summer, but this plant is best known for its fruit which turns
from green to pink with purple centers as summer progresses. This sequence
can be quite spectacular on plants that are growing in full sun. Peaty
damp soil is what this viburnum likes, and it can grow on the edge of
ponds in very wet conditions. Hardiness: Zone 3 to 7. Source: Northern
Maine.
Viburnum dentatum, Arrowwood Viburnum
This is an upright, multi-stemmed rounded shrub with nice clean deep
green foliage, cream colored flowers in the spring and blue to black
fruit in late summer to early fall. Not fussy as to soil type, I find
this plant growing in many locations, including pure sand near a salt
pond in Rhode Island. Obviously, it is extremely salt tolerant. Hardiness:
Zone 3 to 8. Source: Unknown.
Viburnum trilobum, Cranberrybush Viburnum
This viburnum can grow into a rather large shrub, 8 to 10 feet in height
with a spread of approximately the same. It has three lobed, relatively
shiny, leaves and very showy white, 3 to 4 inch diameter, flattop cyme
flowers. Plants growing in full sun can be quite spectacular when in
bloom. The fruit, which matures in September but hangs on the plants
throughout the winter, is bright red and is also an important attribute.
The fruit is edible and can be used in jams and jellies. We've found
turkeys feeding on the fruit of some of our larger plants in the nursery.
It likes moist soil that should have good drainage. Hardiness: Zone
2 to 7. Source: Northern Maine.
Xanthorhiza simplicissima, Yellowroot
The roots of this groundcover plant are indeed deep yellow, hence, its
common name. It has compound leaves that tend to stand up over the plant,
which only grows approximately 2 feet in height. Since it suckers from
its roots, it can spread indefinitely if it is in a good location. Its
flowers and fruit are not very apparent or interesting, but it can produce
an extremely dense groundcover in moist but well drained soil. Acid
soil is preferable, and it can take full sun or partial shade. Hardiness:
Zone 3 to 9. Source: North Carolina.
+ Zenobia pulverulenta,
Dusty Zenobia
This is a nice small shrub with attractive semi-shiny leaves that produce
good fall color. The bell shaped flowers in late spring are very appealing.
It likes well drained soil but can also withstand a fair amount of moisture
- acid soil is a must. This plant should be used more often than it
is in both the landscape and in native plant situations. It also gives
us the opportunity to say we grow everything from A to Z. Hardiness:
Zone 5 to 9. Source: Purchased plants.
A few more thoughts - We used to grow several other native shrubs including
Speckled Alder (Alnus rugosa), Pin Cherry (Prunus pensylvanica), and
Groundsel Bush (Baccharis halimifolia), plus others. However, we sold
so few of them that we had to discontinue growing them. We hope this
will not be the case with the varieties we are now growing. Actually,
we'd like to increase the number of species we grow if there is enough
interest. Let us know if you need any plants that we do not have at
the present time.
I have not included some southeastern species that are hardy in New
England but do not fit into my idea of "native plants" - Bald Cypress
(Taxodium distichum) is an example.
If you need more information regarding these plants, please give us
a call. I would be glad to share any information I have with you. Better
yet, visit the native plant garden we installed last fall. The plants
are still small but can give you a good idea how the plants we are growing
look.