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The American Elm cultivar Ulmus americana 'Independence' was raised by Eugene B. Smalley and Donald T. Lester at the University of Wisconsin–Madison from a crossing of the American Elm cultivar Moline and American Elm clone W-185-21, to become one of the six clones forming the American Liberty series, and the only one to be patented (U. S. Plant Patent 6227, 1988).[1]
| Ulmus americana 'Independence' | |
|---|---|
| Species | Ulmus americana |
| Cultivar | 'Independence' |
| Origin | University of Wisconsin–Madison, US |
Almost identical to the species.
No specific information available, but the species as a whole is highly susceptible to Dutch Elm Disease and Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola,[2] and highly preferred for feeding by the Japanese Beetle Popillia japonica [3][4] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.[5][6]
The tree is not known to be in cultivation beyond North America.
North America
- U S National Arboretum [permanent dead link], Washington, D.C., United States. Acc. no. 62001
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