Black ash (Fraxinus nigra)

General Plant Information (Edit)
Plant Habit: Tree
Sun Requirements: Full Sun
Water Preferences: Wet
Wet Mesic
Mesic
Soil pH Preferences: Very strongly acid (4.5 – 5.0)
Strongly acid (5.1 – 5.5)
Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 2 -45.6 °C (-50 °F) to -42.8 °C (-45°F)
Maximum recommended zone: Zone 6b
Plant Height: 50 to 75 feet
Plant Spread: 35 to 50 feet
Leaves: Deciduous
Flowers: Inconspicuous
Suitable Locations: Street Tree
Uses: Shade Tree
Water gardens
Useful for timber production
Wildlife Attractant: Other Beneficial Insects
Resistances: Flood Resistant
Propagation: Seeds: Self fertile
Pollinators: Wind
Miscellaneous: Tolerates poor soil
Monoecious
Conservation status: Vulnerable (VU)

Conservation status:
Conservation status: Vulnerable
the samaras (dry fruit of a seed with a wing)

Photo gallery:
Location: Hibernia County Park in southeast PennsylvaniaDate: November 10th 2017the samaras (dry fruit of a seed with a wing)
By ILPARW
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Location: Morton Arboretum in Lisle, ILDate: early September 2011large trunk and bark
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Location: Hibernia County Park in southeast PennsylvaniaDate: August 2017foliage hanging down
By ILPARW
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Location: Hibernia County Park in southeast PennsylvaniaDate: August 2017looking up into foliage of tree hanging over
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Location: Hibernia County Park in southeast PennsylvaniaDate: August 2017trunk and bark of a maturing tree
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Location: Morton Arboretum in Lisle, ILDate: early September 2011full-grown tree that used to be in the Olive Family Collect
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Location: Morton Arboretum, west sideDate: early September 2011summer foliage
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Location: southeast PennsylvaniaDate: June 2014sapling in container bought from native nursery
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Location: Hibernia County Park in southeast PennsylvaniaDate: November 10th 2017a twig with buds
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Comments:
Posted by ILPARW on Nov 10, 2017 1:40 PM

Black Ash is common in some swamps and bottomlands in the northern forest areas of southeast Canada, New England, and the upper Great Lakes. Its native range goes down to New Jersey, most of Pennsylvania, some of West Virginia, most of Ohio, much of Indiana, northern Illinois, eastern Iowa, and then back up into all of Wisconsin & Michigan, and much of Minnesota. It is not common in most of its range, just a little here and there. White and Green Ashes are the really common species everywhere and used much more in horticulture. Black Ash makes a perfectly good shade tree for draining wet or well-drained soils of a pH range of 4.5 to around 7.0. It is fast growing in swamps of 2 to 4 feet/year and still relatively fast in landscapes. Lives around 100 years. There are a few cultivars of this species, and of a hybrid between this American species and the similar Manchurian Ash of northeast Asia. It is endangered by the new pest from China of the Emerald Ash Borer. If resistant strains or cultivars come forth, it makes a perfectly fine shade tree that should be used.

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