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.
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. Large, pinnately compound leaves (1–4 feet long) with
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 commonly known as