A blue ash Courtesy G. Lumis	Leaf of a blue ash Courtesy G. Lumis	Twig of blue ash Courtesy G. Lumis

Scientific Name: Fraxinus quadrangulata

Hardiness Zones: 4 to 7 
Height: 40 ft
Spread: 30 ft 
Form: oval 
Type: deciduous tree 
Annual Growth Rate: 12 to 18 inches 

Comments
The blue ash is a native tree with dark green foliage during the growing season but changing to yellow in the fall. 

Text courtesy University of Michigan State Extension Service