Scientific NameFraxinus pennsylvanica
Synonyms (former Scientific Names):
Fraxinus pennsylvanica var. integerrima
Fraxinus pennsylvanica var. lanceolata
Fraxinus pennsylvanica var. subintegerrima
Fraxinus pennsylvanica var. austinii
Fruits are straw-colored, one-seeded, winged (samaras), 1 to 2 1/2 inches long, borne in dense branching clusters; flowers are inconspicuous, without petals, borne in dense clusters (panicles) near the ends of the twigs, male and female flowers on separate trees; leaves are opposite, pinnately compound, 4 to 6 inches long, 7 to 9 leaflets, narrowly elliptical, long-pointed, entire, bright green above, paler below; stem straight, bark thin with network of interlacing ridges, brown to dark gray, twigs smooth; roots are shallow, wide-spreading
Fraxinus pennsylvanica Marsh., green ash, is a deciduous, medium-sized tree with an open, irregular crown reaching about 50 feet in height. Native to eastern North America and is fairly common west to Wyoming and Colorado along plains watercourses at elevations below 6,000 feet. The tree is fast growing on moist bottomlands, and is extremely hardy to climatic extremes once established.
Green ash is widely adapted to soils, moisture conditions and pH found east of the Rocky Mountains. The species will tolerate seasonal flooding, but is intolerant of shading from surrounding trees. Green ash is a fairly early successional tree on most sites. Green ash is distributed throughout the east and midwest of the United States.
woody bush or tree
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
longer than leaf
Stem Cross Section
round or oval