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Fraxinus nigra Marshall
USDA Symbol: frni
USDA Native Status: L48 (N), CAN (N)
Black ash is a small-canopied, medium-sized tree, 40-50 ft. tall. Branches reach upward instead of outward like white ash. Leaves are pinnately compound with leaflets that are finely serrated. Bark is scaly and flaky rather tham ridged and furrowed. Insignificant fall color.
The northernmost native ash, Black Ash takes its name from the dark brown heartwood. Baskets, barrel hoops, and woven chair bottoms are made from thin rough strips of split wood, giving rise to the other names.
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf:
Green Autumn Foliage:
Green Size Class:
Bloom InformationBloom Color: White , Purple
Bloom Time: Mar , Apr
, WV Canada: MB
, QC Native Distribution:
Nf. to Man., s. to VA, KY
& IA Native Habitat:
Wet woods; stream banks; lake margins
Growing ConditionsWater Use: High
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist , Wet
Soil pH: Acidic (pH<6.8)
Soil Description: Peat soils, also sandy loams.
Conditions Comments: Black ash is one of the hardiest of all hardwoods. Fast-growing and long-lived. Susceptible, like many ashes, to a wide variety of disease and insect pests; these usually are not a problem to vigorously growing trees.
PropagationDescription: Seeds may be sown outdoors after collection or stored and stratified then sown in spring.
Seed Treatment: Stratify in moist sand or perlite for 30-60 days at 41 degrees.
Commercially Avail: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2013-06-27
Research By: TWC Staff