Tree Fraxinus americana 'Empire' [Empire White Ash] 'Empire' is a narrow, upright tree with handsome fall foliage. Fruits can be a litter problem. An unattractive ash flower gall (caused by mites) can develop on male flowers and persist into winter. Subject to storm damage, so plant in areas that shelter the tree from strong winds. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement…
Tree Fraxinus americana 'Junginger' [sold as Autumn Purple®] [Autumn Purple White Ash] The Autumn Purple White Ash is a popular variant due to its attractive glossy foliage and purple-red fall color. It is a male clone and does not produce any fruit litter. An unattractive ash flower gall (caused by mites) can develop on male flowers and persist into winter. Subject to storm damage, so plant in areas that shelter the tree from strong winds. Emerald Ash Borer is severely affecting all species of this genus. Damage…
Tree Fraxinus americana 'Rosehill' [Rosehill White Ash] 'Rosehill' is a seedless cultivar that is very tolerant of poor soil conditions, including alkaline. Subject to storm damage, so plant in areas that shelter the tree from strong winds. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.
Tree Fraxinus americana 'Tures' [sold as Windy City™] [Windy City White Ash] 'Windy City' is an upright tree with an oval habit and strong branching. This hardy cultivar is also resistant to frost-cracking and has semi-glossy foliage with a handsome, rich fall color. Heavy crops of seeds on female trees cause litter, and these germinate freely making the tree slightly weedy. An unattractive ash flower gall (caused by mites) can develop on male flowers and persist into winter. Emerald Ash Borer is severely affecting all species of…
Tree Indiana Native Fraxinus pennsylvanica [Green Ash] Produces many weed seedlings, except for seedless cultivars. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.
Tree Fraxinus pennsylvanica 'Cimmzam' [sold as Cimmaron®] [Cimmaron Green Ash] This seedless, male cultivar has a uniform upright habit with an oval canopy. Fall color is a handsome orange-red. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.
Tree Fraxinus pennsylvanica 'Marshall’s Seedless' [Marshall's Seedless Green Ash] This cultivar is marketed as seedless, but there have nonetheless been many females in the population with heavy fruit set. This tree is quite adaptable and fast growing, but also has weak branch angles. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will…
Tree Fraxinus pennsylvanica 'Patmore' [Patmore Green Ash] 'Patmore' is a vigorous male, seedless tree and is considered to be superior to many Green Ash cultivars, including 'Marshall's Seedles'. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.
Tree Fraxinus pennsylvanica [sold as Urbanite®] [Urbanite Green Ash] The Urbanite Green Ash is a broad, seedless tree with bark that seems to have some resistance to sun scald. The foliage is lustrous and leathery, turning a rich bronze in the fall. An unattractive ash flower gall (formed by mites) can develop on male flowers and persists into winter. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually…
Tree Indiana Native Gleditsia triacanthos f. inermis [Thornless Common Honeylocust] This large tree has finely compound leaves that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can be controlled with spraying.
