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Fraxinus nigra, photographed by an iNaturalist contributor
(c) William Van Hemessen, some rights reserved (CC BY-NC), uploaded by William Van Hemessen · CC BY-NC
#253 most planted

Fraxinus nigra

Black ash · also Swamp ash, Water ash, Brown ash

6,227
trees mapped
0.06%
of all named trees
19
cities
7.5 in
median trunk (19 cm, 6,209 measured)

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Fraxinus nigra, also known as black ash, is native to eastern Canada and the northeastern United States. This species is currently critically endangered due to the invasive emerald ash borer.

Where it grows

Trees in each city's inventory, with the share of that city's named trees this species accounts for.

  1. Winnipeg · Canada
    4,088—7.9 in
  2. Edmonton · Canada
    844—9.1 in
  3. Calgary · Canada
    704—3.1 in
  4. Lethbridge · Canada
    216—12 in
  5. Montreal · Canada
    10025 yr3.5 in
  6. Ottawa · Canada
    83—3.1 in
  7. Toronto · Canada
    51—8.5 in
  8. Denver · United States
    32—9.0 in
  9. Mississauga · Canada
    22—16 in
  10. Longueuil · Canada
    19—3.5 in
  11. Vancouver · Canada
    15—7.2 in
  12. Halifax · Canada
    14—4.7 in
  13. Moncton · Canada
    12—17 in
  14. New York City · United States
    11—14 in
  15. Boston · United States
    87.5 yr8.4 in
  16. Quebec City · Canada
    3—5.9 in
  17. New Westminster · Canada
    3——
  18. Kingston · Canada
    1—10 in
  19. Helsinki · Finland
    1—2.0 in

Native range

Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.

Temperate Broadleaf & Mixed Forests

  • New England-Acadian forests

Other Fraxinus in the catalogue

20 of the top 2,000 species are in this genus.

Interested in talking trees? arborary.world@gmail.comTree data © the respective municipal publishers and © OpenStreetMap contributors (ODbL).