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Shade Trees
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Royal Red Maple
Height: 35-40' Foliage: Bright red, glossy
Spread: 25' Fall Foliage: Insignificant
Shape: Broadly oval Zone: 4-7
This Norway Maple selection is similar to 'Crimson King', but with a
somewhat slower growth rate and what some consider slightly better
color. A dense shade tree, it has a straight trunk with a well-shaped
canopy. The glossy foliage is an excellent maroon red all season.
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Red Sunset Maple
Height: 50' Foliage: Bright green, heavy textured
Spread: 30-40' Fall Foliage: Brilliant red
Shape: Upright, dense Zone: 4-7
This outstanding Red Maple offers brilliant red autumn color that is
retained longer than most other Rubrums. Named Iowa Tree of the Year
for 2000, it has thick foliage and a dense, upright branching habit
that makes it a great choice for street and lawn use. Own root.
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Sugar Maple
Height: 50-75’ Fall Foliage: Rich yellow to red
Spread: 50’ Foliage: Dark green
Shape: Upright, rounded Zone: 4-7
Grown from an Eastern United States see source. This wonderful shade
tree is undoubtedly the largest and finest of our native Maples. Slow
to medium in growth rate and very hardy, it prefers rich, well-drained
soil. Fall color is simply spectacular, ranging from rich, brilliant
yellows to all shades of oranges and red.
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Autumn Blaze Maple
Height: 50-60' Foliage: Rich green, deeply lobed
Spread: 40' Fall Foliage: Orange-red
Shape: Dense oval head Zone: 4-7
This hybrid of Silver and Red Maple has experienced phenomenal
popularity due to its ascending branch habit, rapid growth rate,
drought tolerance, ability to grow in most soils, beautiful fall color
and form. It was selected as the 1997 Iowa Tree of the year. 2004 Urban
Tree of the year, Society of Municipal Arborists. Own root.
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Hackberry
Height: 50-75' Fall Foliage: Soft yellow
Spread: 50' Foliage: Bright green
Shape: Spreading, rounded Zone: 2-7
This moderate to rapid grower is very adaptable to the extremes of
urban conditions, including drought and windy conditions. The bark is
corky and rough in texture.
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Redmond Linden
Height: 40-60' Foliage: Glossy, light green
Spread: 25-30' Fall Foliage: Bright yellow
Shape: Pyramidal, uniform Zone: 4-8
A valuable tree for street planting, Redmond has the largest leaves of
the Lindens. The dense foliage is glossy green with bright yellow
autumn color.
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Greenspire Linden
Height: 40-50' Foliage: Leathery, dark green
Spread: 30-35' Fall Foliage: Yellow
Shape: Oval Zone: 4-7
Very suitable for street planting, this 1998 Iowa Tree of the Year has
a straight trunk, rich foliage and fragrant, pale yellow flowers.
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Pioneer Elm
Height: 50' Foliage: Green
Spread: 50' Fall Foliage: Yellow
Shape: Rounded Zone: 5-7
This USDA introduction is the result of a cross between Ulmus glabra and Ulmus carpinifolia in their quest to breed Dutch Elm
disease resistant elms. It is a fast growing tree, with a dense full head and glossy green foliage that turns yellow in autumn.
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Niobe Weeping Willow
Height: 50' Foliage: Bright green
Spread: 50' Fall Foliage: Yellow
Shape: Wide, spreading Zone: 4-8
This fast growing, golden barked Willow has a wide spreading canopy and
long, golden drooping branches. An extremely graceful tree, it prefers
moist planting sites. To prevent dehydration and start buds to break on
potted Niobe Willow, the potted plants should be held in a greenhouse
or a sheltered location until growth has started.
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Skyline Honeylocust
Height: 50' Foliage: Dark green
Spread: 30-35' Fall Foliage: Golden yellow
Shape: Broadly pyramidal Zone: 4-7
A stately and unusual variety with distinctive pyramidal form, this
tree develops a strong, sturdy trunk and shapely crown. Thornless, and
essentially fruitless, it is a valuable tree for light, filtered shade.
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River Birch
Height: 40-50' Foliage: Dark green
Spread: 30-40' Fall Foliage: Golden yellow
Shape: Oval Zone: 4-8
This river bottom native also does well on upland soils. Resistant to
bronze birch borer, it has nice yellow fall color, and attractive
cinnamon-brown exfoliating bark for an interesting winter effect.
Before planting, bareroot River Birch trees should be sweated. See page
287 for procedure. Clumps have three or more stems.
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Whitespire Birch
Height: 30-40' Foliage: Glossy dark green
Spread: 20-35' Fall Foliage: Yellow
Shape: Narrow, pyramidal Zone: 4-7
A white-barked Birch with lustrous dark green foliage that changes to
yellow in the fall. The twigs and foliage are fine textured. Tolerant
of heat and thrives in a wide range of soils. Resistant to the bronze
birch borer.
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Royal Frost Birch
Height: 30-40' Foliage: Burgundy-red
Spread: 15-20' Fall Foliage: Insignificant
Shape: Upright Zone: 4-7
This Birch has the best from both of its parents. From 'Whitespire' it
inherited beautiful white bark and resistance to the Bronze Birch
Borer. From 'Crimson Frost' comes burgundy-red foliage. The combination
of two colors makes this an outstanding specimen tree. Much faster
growing than 'Crimson Frost'
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Swamp White Oak
Height: 50-60' Foliage: Dark green with felty white beneath
Spread: 40-50' Fall Foliage: Yellow-brown to red
Shape: Narrow, rounded, open Zone: 4-8
Excellent in both wet and upland soils, this tree has a coarser, less
deeply incised leaf than Q. alba, and acorns borne on 2-4" stalks. It
shows good transplant success.
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Scarlet Oak
Height: 75-90' Fall Foliage: Brilliant scarlet
Spread: 50-60' Foliage: Lustrous, pinnately lobed
Shape: Broadly pyramidal Zone: 4-7
Similar to Pin Oak, but with more of a globe shape, Scarlet Oak retains its red foliage into winter.
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Bur Oak
Height: 60-80' Fall Foliage: Yellow-brown to purple
Spread: 60-80' Zone: 3-8
Shape: Rounded, open
Foliage: Dark green above, grayish beneath
Native from Nova Scotia to Manitoba and south to Pennsylvania and
Texas, this beautiful oak has attractive corky bark especially
interesting in winter. A great xeriscape plant, it tolerates a wide
range of soil types and air pollutants.
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Northern Red Oak
Height: 60-80' Foliage: Glossy, dark green
Spread: 50' Fall Foliage: Red to red-brown
Shape: Pyramidal in youth, rounded at maturity Zone: 4-8
The fastest growing Oak and one of the easiest to transplant, this tree
is great for street use or as a landscape tree. The foliage is dense
and lustrous and leaves hang on the tree into winter.
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