Ulmus americana
American Elm also called White, Gray, Water or Swamp Elm
2 to 9
Newfoundland, Canada to Florida, west to the foot of the Rockies - United States

Upright, gracefully vase-shaped, with wide-spreading branches.
60-80 feet tall with a spread of 30-50 feet
Plants are polygamo-monoecious . Flowers are greenish-red, not showy
March
Leaves are alternate, simple, ovate-oblong, 3-6 inches long, with an acuminate tip, double serrate margin and an oblique base, coarse in texture.
Fall color is yellow.
 
Bark is gray, scaly, with broad, deep, intersecting ridges, typically displaying large, light brown, stained areas known as Wetwood.
Fruit is a samara, ˝ inch long, maturing in late May-June.
Dutch elm disease (DED) wiped out a huge percentage of American elms starting in the 1950s. Groupings and individuals still survive...and some of them continue to die from DED each year.
 

  • 'Augustine'
  • 'Delaware II' - irregular growth habit, is resistant to DED but susceptible to Phloem necrosis .
  • 'Princeton' - vase shaped and has improved resistance to DED and the elm leaf beetle.
  • 'Washington' - classical vase shape, DED resistant but Phloem necrosis - susceptible.
  • 'Liberty' - mixture of six clones selected for DED resistance that can be expected to have variable disease resistance and growth habits.
 

 

 
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