Ash, Green

Botanical name: Fraxinus pennsylvanica
Family: Oleaceae

Click on images of Green Ash to enlarge.

green ash

  • Native
  • Deciduous
  • Reaches a mature height of ‘ 55 – 75′ capable of a heights (rarely) over 125’
  • Crown is oval upright becoming rounder (often irregular) with age 35′-40′ wide
  • Trunk diameter can grow up to 3′ in diameter
  • Rapid growth rate
  • Bud arrangement
  • Opposite, pinnately, compound leaves 12″ 14″ long with 5-11 leaflets that have finely serrate margins about 4″ in length
  • Bright green shiny leaflets are lighter on the underside and become yellow in the autumn.
  • Does not have notched leaf scars on twigs like the white ash
  • Fruit – produces samaras 1″-2.5″ long and 1.25″ in width
  • Prefers full to partial sun
  • Adapts to a variety of temperatures, soils conditions (including soil compaction) and pH levels
  • Tolerant of both drought and flood
  • One of the, if not the, commonly planted trees in the U.S.
  • Susceptible to attack by Emerald Ash Borer (EAB).
  • Plant Hardiness Zones 3- 9
  • Important Update: All ash trees and other local hardwoods are scheduled to be quarantine by Nov. 12th, 2013. This means no removal of any ash tree (including living tree nursery stock) logs, branches, brush or wood chips larger than 1″ (in two dimensions) may be taken outside of Boulder County.