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Green Ash


Latin Name: Fraxinus pennsylvanica var. subintegerrima


Family: Oleaceae

Native Range: Southern Canada in the Prairie Provinces of Manitoba and Saskatchewan, United States Northern Great Plains.

Seed Source: Green ash shelterbelt near Indian Head Saskatchewan.

Height and Spread: 15m x 5m (25 years).

Overview: Found in bottomlands and river valleys in the Prairie Provinces. Green ash is an excellent species selection for agroforestry applications.

Fruit: A samara consisting of one oval carpelterminating in a broad membranous wing.


Stratification: Soak dry seeds for 3 days in cold water, then stratify 60 days in moist sand at 5°C.

Ideal sowing time: Spring (stratified seed) or fall (non-stratified).

Sowing instructions: Sow 2.0 cm deep,50 seeds/meter; Greenhouse - sow 3 seeds per cell.

Growing conditions: Tremendous adaptability to a wide variety of soils and climates.

Agroforestry Value

Green ash is used for farmstead and field shelterbelts, as a deciduous long-lived tree component of Ecobuffers, and to revegetate surface-mined lands, flood plains, and other areaswhere a moderately fast growing, tough tree is needed. Green ash is easy to grow and transplant. It will withstand long periods of spring flooding.