Tree Gleditsia triacanthos f. inermis [sold as Shademaster®] [Shademaster Thornless Honeylocust] The Shademaster Thornless Honeylocust is a popular cultivar that is nearly fruitless and has dark green, finely compound leaves on ascending branches 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…
Tree Indiana Native Gymnocladus dioicus [Kentucky Coffeetree] Gymnocladus dioicus is a large deciduous tree with strong winter character from the branches and bark. Drops pods (female trees) and twigs, frequently causing litter problem, thus eliminating the straight species as a good street tree. Seeds were once used by US settlers as a coffee substitute, however pulp and seeds are toxic when not properly and completely roasted.
Tree Gymnocladus dioicus 'Espresso' [Espresso Kentucky Coffeetree] Gymnocladus dioicus 'Espresso' is a large, male, fruitless deciduous tree with strong winter character with its vase-like habit and rough bark.
Tree Halesia carolina [Carolina Silverbell] This small tree is interesting in bloom and rather neutral otherwise, but relatively trouble free and useful in many situations as a neutral background plant, or for its flowers. Best grown as a single stem and allowed to branch low (20-30"). Does not transplant well (a particular problem with field-grown plants).
Tree Halesia carolina 'Rosea' [Pink Mountain Silverbell] The Pink Mountain Silverbell is interesting in bloom (pale pink flowers), rather neutral otherwise, but relatively trouble free and useful in many situations as a neutral background plant, or for its flowers. Flowers and fruits are larger than the related species H. carolina. Best grown as a single stem and allowed to branch low (20-30"). Does not transplant well (a particular problem with field-grown plants).
Shrub Hamamelis × intermedia 'Sunburst' [Sunburst Witchhazel] The Sunburst Witchhazel is a large, vase-shaped deciduous shrub that produces a profusion of interesting, strap-like lemon-yellow and red flowers in mid to late winter.
Shrub/Tree Hamamelis vernalis [Vernal Witchhazel] Earliest blooming shrub for the Midwest. Good as a neutral filler for the border with quiet seasonal interest. More pH tolerant than Hamamelis virginiana. Should not be pruned (tip pinching would be acceptable to direct growth). Not as showy in bloom as Hamamelis mollis, the Chinese Witchhazel, or its hybrids.
Tree Heptacodium miconioides [Seven-son Flower] The common name, Seven-Son Flower, is derived from the cluster of 7 small flowers contained within each whorl. The flowers are followed by very showy, reddish fruit structures that have the appearance of flowers. The tan, shredding bark is attractive and exfoliates in long strips to reveal a dark brown inner bark. This plant can be hard to find, both in the wild and in commerce. Needs pruning to maintain aesthetics.
Shrub/Tree Hibiscus syriacus [Rose-of-Sharon] Flowers single or double, in wide range of colors (depending on cultivar), are born on new growth, so heavy pruning in the spring enhances blooming later that summer. Pruning to functional size of 4-5' produces excellent habit and flowering. Becomes leggy with age if not pruned. Prune hard when young to promote more branching. Occasionally, stems are killed back in winter; nevertheless, flowering on new growth is not reduced. Generally not the best for solid…
Shrub Hibiscus syriacus 'Diana' [Diana Rose-of-Sharon] The white flowers of 'Diana' are born on new growth, so heavy pruning in the spring enhances blooming later that summer. Pruning to functional size of 4-5' produces excellent habit and flowering. Becomes leggy with age if not pruned. Prune hard when young to promote more branching. Occasionally, stems are killed back in winter; nevertheless, flowering on new growth is not reduced. Generally not the best for solid screening. Late to leaf out in spring.…
