White Ash

White Ash

Pollen Type: Tree

Cross-Reactivity: Other Ashes, Lilac, Olive, Privet

HS Allergy Extract: Ash, White or Tree Mix #6 or Tree Mix #11

Family: Oleaceae

Genus/Species: Fraxinus americana

Common Names: White Ash, Biltmore Ash, Biltmore White Ash

Distribution: Eastern North America from Nova Scotia west to eastern Minnesota and south to Texas and northern Florida.

Locations: Forests and open fields. Also found in urban areas like parks and planted along streets for ornamental purposes.

Pollinating Period: January in warm climates. Typically April & May.

Pollination Method: Wind-pollinated

Description: White Ash grows to a height of 50’-80′ with a spread of 40’-50′ at maturity. Its bark is light gray to dark brown with deep grooves and narrow, interlacing ridges that form a diamond or x-pattern. Its canopy grows in an oval or pyramidal shape and rounds out with age. Leaves are 8”-15″ and divided into 5-9 dark green leaflets. They turn shades of yellow, deep purple, and maroon during the fall. White Ash is dioecious, meaning that male and female flowers grow on different plants. The petal-less flowers grow in shoots and are light green to purplish. Females develop into loose panicles while males grow in tighter clusters. The female flower produces elongated winged seedpods 1″-2″ in length, which spread by wind.

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White Ash