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ELM
American Elm
(Ulmus americana)—Throughout much of the 20th
century, this species has been considered doomed
due to the devastating effects of Dutch Elm
Disease (DED). Now however, we are seeing the
release of American Elm selections that have
survived the attacks of DED and proven
themselves to be naturally resistant to this
dreaded disease. Developing into a large tree
with an arching, vase-shaped form. Extremely
tough and durable. Height 60-80’, spread 60-70’.
'Princeton’—This form was introduced back
in the 1920's before Dutch Elm Disease hit the
east coast and is still growing strong. It is
one of the few forms that has survived through
the years, proving to be not only an attractive
form, but also amazingly resistant to Dutch Elm
Disease. Height 60-80', spread 40-60'.
‘Valley
Forge’—This introduction from the U.S.
National Arboretum was made after extensive
screening for Dutch Elm Disease resistance.
Amazingly tough with all the classic desirable
American Elm charactistics.
NEW!—Emerald
Sunshine Japanese Elm
(Ulmus propinqua ‘JFS-Bieberich’)—Grown
from seed collected in China, but evaluated in
western Oklahoma under hot, arid, summer
conditions. Foliage stays clean and healthy
looking even in the hottest of summers. Matures
smaller than most elms. Height 25-30’, spread
20-25’.
Hybrid Elm
(Ulmus hybs.)—Once one of the most stately trees
to be found, American Elm graced landscapes
throughout the country. Now, as a result of
Dutch Elm Disease, most of this country’s
American Elms are either gone or soon to be lost
leaving huge gaps in our urban forest. These
hybrids are an attempt to return some of that
grandeur back into our lives. Through years of
breeding and selection, numerous elm hybrids are
now available that offer many of the desirable
qualities that the American Elm had with much
improved disease resistance, especially to Dutch
Elm Disease. Tough and durable, these trees have
brought the elm back into our yards.
'‘Frontier’—A U.S. Department of Agriculture
introduction. This hybrid elm has good
resistance to Dutch Elm Disease and Phloem
Necrosis. Better yet, it is also extremely
tough, develops a nice shape, and has impressive
red-purple to burgundy fall color. Height
30-40’, spread 25-35’.
'Patriot’—This is a U.S. Department of
Agriculture selection made to help replace the
dying American Elm population. This introduction
has tremendous Dutch Elm Disease resistance and
is not plagued by elm leaf beetle. Makes an
attractive tree with a vase-like growth habit.
Tough! Height 50-60’, spread 30-40’.
Lacebark Elm
(Ulmus parviflora)—Very graceful tree, often
with pendulous branches. Leaves are dark green,
changing to reddish in the fall. Bark peels to
reveal a combination of gray, green, orange and
brown. Truly a beautiful Elm and an excellent
tree. Resistant to Dutch Elm Disease. Height
30-40’, spread 30-40’.
‘Allee’ (‘Emer II’)—A tall, more upright growing
form, reminiscent of American Elm. Height
40-50’, spread 30-40’.
‘Bosque’
(‘UPMTF’)—A more upright, oval-shaped
selection. Lustrous, dark green summer foliage
changes to golden-yellow in the fall. Beautiful
bark exfoliates in puzzle-like patterns.
Extremely disease and insect resistant. Height
50-60’, spread 35-40’.
NEW!— ‘Easy
Street’
(‘WhitXXX’)—Selected for better structural
tnedencies, making it more resistant to wind and
ice damage. Dark green foliage and showy bark
typical of the species. Height 35-45', spread
10-20'. EVODIA
Korean Evodia
(Evodia daniellii)—An uncommon but certainly
desirable small tree. Very adaptable, tough and
attractive. Dark green foliage and an impressive
display of small white flowers borne in 4-6”
clusters late in the summer. Showy red to black
seed capsules. Height 20-30’, spread 20-30’.
FRINGETREE
Chinese Fringetree
(Chionanthus retusus)—A wonderful small tree for
the yard. It is literally covered with white,
fringe-like flowers in the spring. Absolutely
stunning! Height 15-20’, spread 15-20’.
White Fringetree
(Chionanthus virginicus)—A lovely, small,
flowering tree. White, slightly fragrant flowers
borne in 6-8” panicles cover the tree in
May-June. Lustrous, dark green summer foliage. A
perfect specimen plant. Height 12-15’, spread
10-15’.
GINKGO
Ginkgo
(Ginkgo biloba)—This is a wonderfully unique
lawn or street tree, unlike anything else you
will come across. Fossilized records indicate
that this tree was growing on earth over 150
million years ago! You know that means it has to
be tough. A wonderful tree for today’s
landscapes. Bright green summer foliage changes
to brilliant yellow in the fall. We carry only
fruitless, male forms.
‘Autumn Gold’—A very symmetrical selection with
outstanding, golden-yellow fall color.
‘Golden Globe’—An exciting form, discovered in
1990. This selection matures with a rounded head
that is more dense than typical selections. Good
growth rate and impressive golden-yellow fall
color. Height 30-50’, spread 30-50’.
‘Princeton Sentry’—A fruitless
introduction with an attractive upright,
pyramidal habit. Good yellow fall color. Height
30-50’, spread 15-25’.
'Seedling’—These are seed grown trees,
not grafted, so the sex of the plant is unknown.
That is worth noting because female trees
produce a small (about 1”) fleshy, fairly smelly
fruit. Male trees however, will be fruitless.
The trick is it may take 20 years or more for a
tree to come into fruit, so until then you don’t
know what you have, so buyer beware! Height
40-60’, spread 30-40’.
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GOLDENRAINTREE
Goldenraintree
(Koelreuteria paniculata)—A wonderful, small to
medium-sized summer-flowering tree. Produces a
heavy display of bright yellow flowers, borne in
large, 12-15” long terminal panicles. Typically
produces flowers through the months June, July
and sometimes August. Height 20-30’, spread
20-30’.
HACKBERRY
Common Hackberry
(Celtis occidentalis)—A very tough and durable
tree that makes a fine shade tree. One of our
natives. Height 50-60’, spread 50-60’.
HAWTHORN
Crimson Cloud English Hawthorn
(Crataegus laevigata ‘Crimson Cloud’)—A red
flowering selection. Each individual flower is
actually red with a white, star shaped center.
Impressive in flower. Bright red fruits. Height
15-25’, spread 15-20’.
Washington Hawthorn
(Crataegus phaenopyrum)—Dense tree with small
shapely crown. White flowers in spring with
scarlet foliage in fall. Persistent small
orange-red berries in fall and winter. Height
20-30’, spread 20-30’.
Winter King Hawthorn
(Crataegus viridis ‘Winter King’)— A
magnificant tree with bright white flowers in
the spring and loads of bright red fruits in the
fall, persisting through the winter. One of the
most impressive selections for overall fruit
display. Somewhat susceptible to rust. Height
20-25’, spread 20-30’.
HONEYLOCUST
Shademaster Honeylocust
(Gleditsia triacanthos var. inermis ‘Shademaster’)—This
very popular selection makes a wonderful shade
tree. Ferny foliage creates a nice filtered
shade. Rapid grower, but still very strong. This
is a thornless and essentially seedless
selection. Dark green summer foliage changing to
yellow in the fall. Height 40-50’, spread
30-40’.
Sunburst Honeylocust
(Gleditsia triacanthos var. inermis ‘Suncole’)—New
growth is brilliant golden-yellow. Open, airy
habit. Height 30-40’, spread 30-40’.
HOPHORNBEAM (Ironwood)
American Hophornbeam
(Ostrya virginiana)—This is a handsome, rugged
tree, well suited for tough growing conditions.
A native tree, often found growing in dry rocky
sites. Height 25-30’, spread 15-20’.
HOPTREE
Hoptree
(Ptelea trifoliata)—An interesting native
tree-like shrub. Produces papery fruits that
were formerly used as a substitute for hops,
hence the name. Very adaptable species useful
for naturalistic plantings. Height 5-15’, spread
5-15’.
HORNBEAM
American Hornbeam
(Carpinus caroliniana)—A small, slow growing
tree. Sometimes called Blue Beech because of the
bluish-gray branch color. Foliage turns orange
to red in the fall. Prefers partial shade.
Height 20-30’, spread 20-30’.
Franz Fontaine Pyramidal Hornbeam
(Carpinus betulus ‘Franz Fontaine’)—A good
narrow form, great for use as a dramatic accent
or in areas where space is limited. Actually
maintains a narrow habit into old age better
than many other fastigiate-type European
Hornbeams. Height 25-35’, spread 15-18’.
Pyramidal Hornbeam
(Carpinus betulus ‘Fastigiata’)—Upright habit
with dense growth. Dark green foliage. Tree is
very tolerant of wet soils. Height 20-30’,
spread 15-20’.
Rock Hornbeam
(Carpinus turczaninovii)—A small, shrubby tree
with striking purple new growth. A perfect
choice for a truly unique specimen for a small
area. Height 10-15’, spread 10-15’.
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