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Ulmus parvifolia 'Cork Bark'

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Ulmus parvifolia 'Cork Bark'
SpeciesUlmus parvifolia
Cultivar'Cork Bark'
OriginNorth America

The Chinese Elm cultivar Ulmus parvifolia 'Cork Bark' or 'Corticosa is a North American clone.

Description

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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]

Pests and diseases

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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]

Cultivation

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The tree is sometimes chosen for bonsai, on account of its bark.

Synonymy

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  • Ulmus parvifolia Jacq. corticosa[1]

Accessions

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North America

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References

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  1. ^ a b c Ulmus parvifolia 'Cork Bark', The Dawes Arboretum; dawesarb.arboretumexplorer.org
  2. ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.