This rounded, compact, and low-fruiting cultivar 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 […]
Read More… from Gleditsia triacanthos f. inermis ‘Impcole’ [sold as Imperial®]
‘Wintergreen’ has a narrow pyramidal habit and maintains excellent color all year round. Slightly faster growing and more shade tolerant than other variants of T. occidentalis. One of the best plants for screening in moist, well-aerated soils. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled […]
‘Rosea Plena’ is a small, near fruitless, multi-stemmed shrub with beautiful pink and white double flowers. It has an irregular, spreading form that can eventually become too open. Annual and immediate pruning following flowering and constant removal of root suckers will help maintain a better form and encourage increased blooming. Requires well-drained soil. Susceptible to […]
As its common name suggests, the Weeping Norway Spruce has a drooping habit and pendulous branches. This plant’s irregular form varies depending on how it is trained, and it may even spread along the ground if left unsupported. Slight mite susceptibility in hot, dry sites. Some susceptibility to borers. […]
‘Aurea’ is a semi-dwarf cultivar with bright green needles that turn a bright golden-yellow in the winter. Best coloration in full sun. Pruning annually can help maintain dwarf habit (don't pinch or cut past candles). Can be disfigured by scale insects. […]
‘Hillside Creeper’ is a low-growing, spreading evergreen that can be used as a groundcover. Tolerant of fairly dry soils, but not a good specimen in shade or on wet soils. […]
The Elm genus, Ulmus, contains about thirty species of mostly deciduous trees. Generally susceptible to Dutch Elm Disease, which is caused by Ophiostoma ulmi. (Dutch Elm Disease has lead to the near extinction of the American Elm in the US). […]
A compact cultivar with attractive, variegated leaves. Grows well in a variety of situations, including wet soil. Easy to transplant. Relatively trouble-free. A three-year pruning cycle improves form, vigor, and winter stem color effect. Cutting all stems 6-12" from ground in late winter has similar effect. Best in mass plantings. Excellent for winter color. Leaf […]
Read More… from Cornus alba ‘Bailhalo’ [sold as Ivory Halo™]
The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department