Tree-of-Heaven

Tree-of-Heaven

Ailanthus altissima

Simaroubaceae (Quassia Family)

▲ ▼ seedlings

▲ leaves showing glandular "bumps" at base of leaflets

▲ mature tree

▲ tree bark

Tree-of-Heaven, Ailanthus: (not in Weeds of the Great Plains; pp. 346-347, Weeds of the Northeast)

medium to large, fast-growing tree with pinnately compound, shiny-green leaves, similar to sumacs; however, grow much larger and faster than sumacs; sumacs also are colony forming and have red-orange fall color
leaves differ from sumac by unpleasant odor and small bumps/glands at the base of leaflets on the base of tree-of-heaven leaves
wood is weak and prone to decay; tends to be a short-lived tree
often found in urban areas, growing up through cracks in pavement, against buildings
is dioecious, with separate male & female plants; male flowers often with bad odor
undesirable due to weak growth and invasive nature