Green Ash (Fraxinus pennsylvanica): Adaptable Native Shade Tree

Green ash is a widespread, fast-growing deciduous tree native to eastern and central North America, once a popular street tree but now threatened by emerald ash borer.

Botanical Profile

Description and Features

This tree grows 50–60 feet tall with a rounded to oval crown. Leaves are pinnately compound with 5–9 leaflets, green both sides. Bark is gray-brown, with interlacing ridges. Samaras are paddle-shaped. Fall color is yellow.

Cultivation and Warning

Green ash tolerates a wide range of soils, including wet and alkaline conditions. However, due to the devastating emerald ash borer (EAB), planting new ash trees is strongly discouraged in most of North America. Existing trees may be treated with insecticides.

Alternatives

Consider planting diverse species like oak, elm (resistant cultivars), or maple instead.