Green Ash


Fraxinus pennsylvanica

Leaves: Deciduous.  Pinnately compound leaves 10-12” long. 7-9 leaflets each 2-5” long, 1-2” wide, ovate with pointed tips. Bright medium to dark green summer color. Yellow fall color.

Bark/Twigs: Ash gray to gray-brown colored bark. Furrowed into close diamond shaped areas.  Flowers/Fruit: Inconspicuous flowers. Dioecious- species have both male and female trees. Female trees produce 1-2” long, ¼” wide seeds which look like a canoe paddle.

Mature size and shape: Large. 50-60’h x 25-30’w. Slightly pyramidal when young, developing into an upright-spreading habit. Crown is extremely irregular in shape.

General information/special features: Plant in full sun. Grows in almost all soil types. Tolerates salt, drought, alkaline soil, and wind.

Landscape use and Maintenance: Good shade tree. Grows anywhere, but needs a very large space. Fast growing rate. Average maintenance. Transplants readily. Buy male varieties to avoid messy seeds.

USDA Hardiness Zone: 3-9

Family/Origin: Oleaceae – Olive. Native from the Great Plains east, including southern Canada.

Campus use: Very common. Can be found in President's Circle and west of George Thomas (Bld 5).