Ailanthus altissima , commonly known as , is a rapidly growing invasive deciduous tree native to China. Since its introduction to North America in the late 1700s, it has become a major ecological threat due to its extreme adaptability, prolific seed production, and aggressive root system. It is also the preferred host of the invasive Spotted Lanternfly . Key Identification Characteristics
Crushed leaves and stems emit a strong, unpleasant smell often compared to rancid peanut butter or "stink tree". ailanthus altissima
Accurate identification is critical to distinguish it from native look-alikes like sumac or walnut. Ailanthus altissima , commonly known as , is
Large, pinnately compound leaves (1–4 feet long) with 10–41 leaflets. Leaflets have smooth edges except for 1–2 small "teeth" at the base. Leaflets have smooth edges except for 1–2 small
Smooth and light gray when young, developing shallow diamond-shaped fissures that resemble the skin of a cantaloupe as it ages.
Female trees produce large clusters of "samaras" (twisted, papery wings) that turn from yellow-green to reddish-pink in late summer and can persist through winter. Ecological & Infrastructure Risks Tree of Heaven | (Ailanthus altissima) - Wisconsin DNR