One of the finest small trees, interesting at almost every season. Distinct horizontal branching patterns. Widely adaptable, but material of different geographic origin varies widely in hardiness. Fruit is an important food supply for native birds and other animals. Not extremely drought-tolerant, but useful in most parts of the Midwest. Dogwood borer and dogwood anthracnose […]
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. Scale and leaf spot can be a problem. Can appear a bit coarse in the landscape. […]
Broad-spreading, low branched, forming stratified tiers, very interesting branching habit. Leaf spot and twig blight/canker can be problem for older trees. […]
‘Regnzam’ is a compact cultivar, also known for its bright red stems and fall foliage. 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 […]
This cultivar is known for its deep purple twigs in winter and rich reddish-purple foliage in fall. Grows well in a variety of situations, including wet soil. Easy to transplant. 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 […]
A vigorous 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 […]
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 blight can be a problem. […]
Clethra alnifolia ‘Hummingbird’ is an award-winning shrub with abundant, beautfiul and fragrant white flower spikes. However, the habit eventually tends to flop and appear unkempt. It spreads by underground stems to make large clumps, but can be restrained when necessary. This plant can suffer in full sun and/or dry soils, but can bloom well in […]
Only growing to 2-4′ high and wide, Clethra alnifolia ‘Compacta’ is denser and more compact than the straight species. This plant can suffer in full sun and/or dry soils, but can bloom well in shade. […]
Spreads by underground stems to make large clumps, but can be restrained when necessary. Can be badly infested with mites, especially on dry soils. Can suffer in full sun and/or dry soils, but can bloom well in shade. […]
The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department