Click on the images help you identify a green ash.
Form
Height 40 to 60 feet, with a trunk diameter up to 24 inches. Round-topped with slender, spreading branches.
Bark
Dark brown or gray, tinged with red; strongly furrowed or ridged.
Leaf
Leaves are opposite on the stem, 10 to 12 inches long, pinnately compound with seven to nine stalked leaflets, each 2 3/4 to 5 inches long, pointed and slightly toothed along the margin. Leaf color is bright green or yellowish-green on both sides, turning yellow in autumn.
Fruit (seed)
Fruit is a flat, winged samara, 1 to 2 inches long. The winged portion extends well past the middle of the seed-bearing part, slightly notched at the outer end, giving the wing a somewhat square appearance.
Range
Common throughout Minnesota, except in the western prairie region. Most abundant in valleys and along streams. Moderately shade-tolerant, fairly fast-growing, and able to withstand severe soil and climate conditions.