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Frequently Asked Questions

Alternatives to Ash
(Fraxinus spp.)

Produced by Jeff Iles
Department of Horticulture
Iowa State University
Ames, IA 50011-1100
iles@iastate.edu

As the Emerald Ash Borer (EAB) continues to infest and kill native ash species in the upper Midwest (Michigan, Ohio, Indiana, and Illinois), nursery and landscape professionals in Iowa appropriately are reducing or eliminating green, white, black, and blue ash from their inventories and designs and replacing them with a host of other useful and pest-resistant tree species.  While not all-inclusive, this list does describe some of today’s best shade tree selections suitable for the Iowa landscape.

Deciduous Shade Trees Height/Width Growth Habit
Acer freemanii - Freeman Maple
Jeffersred (Autumn Blaze®) 50'/45' Broadly-oval
DTR 102 (Autumn Fantasy®) 40'/30' Broadly-oval
Marmo 50'/30' Upright-oval
Morgan (Indian Summer) 45'/40' Rounded
Sienna (Sienna Glen®) 45'/35' Pyramidal
Acer miyabei - Miyabe Maple
Morton (State Street®) 45'/30' Upright-oval
Acer platanoides - Norway Maple
Deborah 45'/40' Rounded
Ezestre (Easy Street®) 40'/20' Narrow-pyramidal
Fairview 45'/35' Upright-oval
Pond (Emerald Lustre®) 45'/40' Rounded
Emerald Queen 50'/40' Broadly-oval
Princeton Gold 35'/30' Oval
Acer truncatum - Hybrid Maple
Warrenred (Pacific Sunset®) 30'/25' Upright-spreading
Acer rubrum - Red Maple
Bailcraig (Scarlet Jewell®) 50'/30' Upright
Franksred (Red Sunset®) 45'/35' Upright-oval
Magnificent Magenta (Burgundy Belle®) 50'/40' Oval
Frank Jr. (Redpointe®) 45'/30' Pyramidal
New World 40'/20' Narrow-oval
Polara (Rubyfrost®) 45'/40' Broadly-oval
Acer saccharinum - Silver Maple
Silver Cloud 50'/30' Upright-oval
Skinneri 50'/40' Upright-oval
Acer saccharum - Sugar Maple
Bailsta (Fall Fiesta®) 50'/50' Upright-oval
Commemoration 50'/35' Oval-rounded
Endowment 50'/20' Columnar
Legacy 50'/35' Oval
Morton (Crescendo®) 40'/30' Broadly-oval
Green Mountain 45'/35' Broadly-oval
     
Deciduous Shade Trees Height/Width Growth Habit
Alnus hirsuta - Manchurian Alder
Harbin (Prairie Horizon®) 40'/30' Upright
Betula nigra - River Birch
Cully (Heritage®) 45'/30' Oval
Betula platyphylla - Asian White Birch
VerDale (Prairie Vision®) 35'/30' Upright-oval
Betula populifolia - Gray Birch
Whitespire Sr. 40'/25' Pyramidal-oval
Celtis occidentalis - Hackberry 50'/30' Ascending/arching
Corylus colurna - Turkish Filbert 40'/30' Pyramidal
Ginkgo biloba - Ginkgo
Autumn Gold 45'/35' Broadly-pyramidal
Halka 45'/40' Oval
Magyar 60'/40' Upright-oval
PNI 2720 (Princeton Sentry®) 40'/15' Narrow-pyramidal
The President (Presidential Gold®) 50'/40' Broadly-pyramidal
Gleditsia triacanthos var. inermis - Freeman Maple
Harve (Northern Acclaim®) 45'/35' Upright-spreading
Skycole (Skyline®) 50'/35' Pyramidal
Gymnocladus dioicus - Kentucky Coffee Tree
Espresso 50'/35' Oval
Maackia amurensis - Amur maackia 25'/25' Upright-spreading
Magnolia acuminata - Cucumbertree 50-80'/40-60' Rounded
     
Deciduous Shade Trees Height/Width Growth Habit
Phellodendron spp. - Cork Tree
Longenecker (Eye Stopper®) 40'/35' Rounded
His Majesty 40'/35' Rounded
Quercus alba - White Oak 50-70'/40-80' Spreading
Quercus bicolor - Swamp White Oak 60'/60' Rounded
Quercus macrocarpa - Bur Oak 50-80'/40-80' Spreading
Quercus rubra - Red Oak 60-75'/60' Spreading
Quercus - Hybrid Oak
Clemons (Heritage®) 40-50'/40-50' Broadly-pyramidal
Long (Regal Prince®) 45'/18' Narrow-oval
Tilia americana - American Linden
Boulevard 60'/30' Pyramidal
Wandell (Legend®) 40'/30' Broad-pyramidal
McKSentry (American Sentry®) 45'/30' Pyramidal
Lincoln 35'/25' Pyramidal
Redmond 50'/35' Pyramidal
Tilia cordata - Littleleaf Linden
Baileyi (Shamrock®) 40'/30' Pyramidal
Glenleven 45'/30' Pyramidal
Ronald (Norlin®) 40'/30' Pyramidal
Tilia mongolica - Mongolian Linden
Harvest Gold 30-40'/25-30' Upright-oval
Ulmus americana - American Elm
New Harmony 70'/70' Vase-shaped
Princeton 60'/40' Vase-shaped
Ulmus davidiana var. japonica - Japanese Elm
Discovery 40'/30' Vase-shaped
Ulmus wilsoniana - Wilson Elm
Prospector 50'/25' Vase-shaped
Ulmus - Other Hybrid Elms
Morton (Accolade®) N/A N/A
Morton Glossy (Triumph®) N/A N/A