The American Elm cultivar Ulmus americana 'Exhibition' is a selection made by the Patmore Nurseries from seeds of a tree at Brandon, Manitoba. Released in 1952, 'Exhibition' was propagated by grafting.
Ulmus americana 'Exhibition' | |
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Species | Ulmus americana |
Cultivar | 'Exhibition' |
Origin | Patmore Nurseries, Brandon, Manitoba, Canada |
The tree has an upright habit, with a dense, vase-shaped canopy formed from branches bearing numerous small twigs.[1]
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]
The tree's status in North America is not known. 'Exhibition' is no longer in commerce.