A fine small tree that grows wild in many parts of Indiana. Relatively trouble-free and drought-resistant. Requires some protection from the sun in hotter climates, however flowering decreases with deep shade. Canker, leaf spot, and verticillium wilt can be problematic for older trees, or trees weakened by other environmental stresses. Due to genetic variability, be […]
More hardy once established than when young. A striking specimen tree, useful for partial shade and accent. Unusually free of insect problems. Leafs out early in spring. Forms multiple trunks unless pruned. Does not transplant well. Not very drought-tolerant, particularly after transplanting. […]
As well adapted to Midwestern conditions as American Elm, and a reasonably good substitute in form as well. Especially useful in large-scale situations with dry soils and heavy winds. ‘Prairie Pride’ has glossy, thick, leathery leaves and is less of a litter problem than the species type due to its lower fruit production. Subject to […]
As well adapted to Midwestern conditions as American Elm, and a reasonably good substitute in form as well. Especially useful in large-scale situations with dry soils and heavy winds. Subject to a leaf nipple gall (caused by psyllid insect Pachypsylla dismamma, one of many jumping plant lice) and witches’-broom disease (caused by Eriophyid mite), both […]
Sun to partial shade (best flowers in full sun), and tolerant of soil conditions (except wet). Tends to be invasive. Birds are fond of fruits. Tends toward dioeciousness. Female plants need a male pollinator to produce more abundant fruits. Can girdle trees it grows on. Euonymus scale and two-marked treehoppers can cause damage. […]
Widely adaptable, the Cedar of Lebanon was considered hardy from Zone 7 southward until hardy strains were imported from higher elevations in Asia Minor, beginning with the Arnold Arboretum expedition in 1903. The Cedar of Lebanon prefers pollution-free, open, and sunny areas. It is difficult to transplant and is not tolerant of air pollution or […]
New Jersey Tea is a native prairie plant that has thick, deep-reaching, red roots (which can even grow up to 8″ in diameter), making it very drought tolerant, but also difficult to transplant. This small, compact shrub is able to fix atmospheric nitrogen and is quite adaptable, not only tolerating drought, but different soil types […]
Coarse winter trunks and branches are bold and striking; picturesque. Best for difficult areas. Wood is rot resistant, but is somewhat brittle so branches can fall in wind and ice storms. Too coarse of texture for most urban landscapes. Short-lived to about 50 years. […]
The Golden Southern Catalpa can tolerate full sun, but does best in part sun to part shade. This species is weak wooded and should not be placed where it is open to wind and storm damage. ‘Aurea’ is known for its rich yellow leaf coloration and its broad form. Its flowers are trumpet shaped and […]
Overall tough and durable, but can be susceptible to blight, twig canker, and orient chestnut wasp. Also susceptible to weevils, which damages the roots. Prefers well-drained, loamy soils, full sun, and hot, arid conditions. […]
The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department