Trees & shrubs


Green ash (Fraxinus pennsylvanica)

Green ash photograph; MN DNR, Welby Smith


Height 40' to 60', up to 24" in diameter; round topped with slender spreading branches.


Dark brown or gray, tinged with red; strongly furrowed or ridged.


Opposite on stem, length 10" to 12", pinnately compound with seven to nine stalked leaflets each 2-3/4" to 5" long, pointed and slightly toothed on margin; bright green or yellowish green on both sides, turning yellow in autumn.

Fruit (seed)

Flat, winged samara, 1" to 2" long; winged portion extends well down past middle or seed-bearing part; slightly notched at outer end; wing has a somewhat square appearance.


Common throughout the state except in the western prairie region; most abundant in valleys and along streams; moderately shade tolerant; fairly fast growing and will withstand severe conditions of both soil and climate.