Cultivar 'Independence' | ||
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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).
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Description
Almost identical to the species.
Pests and diseases
'Independence' has proven only moderately resistant to Dutch elm disease after inoculation with the causal fungus, and is also susceptible to Elm Yellows. The species as a whole is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola [1], and highly preferred for feeding by the Japanese Beetle Popillia japonica [2] [3] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.
Cultivation
The tree is not known to be in cultivation beyond North America.