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blue ash - fraxinus quadrangulata

Common Name: blue ash

Scientific Name: 
Family: Oleaceae
Genus: Fraxinus

Species: quadrangulata

Hardiness Zone: 4 to 7
Height: 50 to 75 ft
Width: 35 to 60 ft

Description:​
​Of the ash in Minnesota, the blue ash is the easiest to identify due to the square growth pattern of the branches. The foliage of the blue ash turns from a dark green to a pale yellow in the fall. Due to the emerald ash borer's spread across Minnesota it is not advised to plant this species of ash.
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