References
- 1 2 3 Ulmus parvifolia 'Cork Bark', The Dawes Arboretum; dawesarb.arboretumexplorer.org
- ↑ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
| Ulmus parvifolia 'Cork Bark' | |
|---|---|
| Species | Ulmus parvifolia |
| Cultivar | 'Cork Bark' |
| Origin | North America |
The Chinese elm cultivar Ulmus parvifolia 'Cork Bark' or 'Corticosa is a North American clone.
By 8 to 10 years old, the bark breaks into thick, rough, irregular dark grey scales with deep fissures, the scales being present also on branches. Leaves are around 4 cm long, light green in spring, middle green in summer, turning bright yellow in fall. Tree grows some 20 ft tall and correspondingly wide. Described by Dawes Arboretum as "a fast-growing, tough tree". [1]
The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the elm leaf beetle Xanthogaleruca luteola . [2] 'Cork Bark' is susceptible to elm yellows. [1]
The tree is sometimes chosen for bonsai, on account of its bark.
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