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Black Ash

Fraxinus nigra

Image of black ash bark. Bark is corky and spongy. Tree is growing in a seasonally wet, riparian habitat.

Fraxinus nigra leaves

Fraxinus nigra, or the black ash, is a species of ash native to much of eastern Canada and the northeastern United States, from western Newfoundland west to southeastern Manitoba, and south to Illinois and northern Virginia. Formerly abundant, as of 2017 the species is threatened with near total extirpation throughout its range within the next century as a result of infestation by an invasive parasitic insect known as the emerald ash borer (Agrilus planipennis).

Quick Facts

Scientific name Fraxinus nigra
Family Oleaceae
Height 40-60 ft
Bloom time Apr-May
Sun Part shade
Moisture Wet
Soil Muck
Wildlife value Keystone of black-ash swamps; now devastated by emerald ash borer

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Image Credits

  • Kkl456 (CC BY-SA 4.0)
  • Keith Kanoti, Maine Forest Service, USA (CC BY 3.0 us)

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