White ash is a native, deciduous, long-lived tree . Leaves are
compound, 8 to 15 inches (20-38 cm) in length, and usually have seven
oval, entire leaflets . White ash is dioecious. The male flowers
bloom first, before the leaf buds break. The pollen is already airborne
during the 7 to 10 days when the female flowers are receptive [10,32].
The flowers are borne in panicles near branch tips. White ash will
start to flower when it is 3 to 4 inches (8-10 cm) in d.b.h., but
abundant flowering does not occur until the tree is 8 to 10 inches
(20-25 cm) .
White ash obtains heights of 60 to 70 feet (18-21 m). The bole is long,
straight and free of branches for most of its length, and the crown is
narrow and pyramidal when grown in a mixed stand. Open-grown specimens
have a short bole with a rounded crown .
- 17. Hosie, R. C. 1969. Native trees of Canada. 7th ed. Ottawa, ON: Canadian Forestry Service, Department of Fisheries and Forestry. 380 p. 
- 10. Farmer, Robert E., Jr.; Pitcher, John A. 1981. Pollen handling for southern hardwoods. In: Agric. Handb. 587. Washington, DC: U.S. Department of Agriculture, Forest Service: 77-83. 
- 30. Vines, Robert A. 1960. Trees, shrubs, and woody vines of the Southwest. Austin, TX: University of Texas Press. 1104 p. 
- 32. Wright, Jonathan W. 1953. Notes on flowering and fruiting of northeastern trees. Station Paper No. 60. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 38 p. 
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