Ulmus parvifolia 'Emer II' | |
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![]() Ulmus parvifolia Allee, North Carolina Arboretum, Asheville, NC | |
Species | Ulmus parvifolia |
Cultivar | 'Emer II' or 'Emerald Vase' = Allee |
Origin | US |
Ulmus parvifolia 'Emer II' or 'Emerald Vase' (selling name Allee) is a Chinese Elm cultivar that was cloned from a tree planted circa 1910 on the University of Georgia campus at Athens.
Allee can reach a height of about 15 m, with a more upright crown shape than its stablemate Athena, its spread approximately 13 m, with arching branches bearing medium green, glossy leaves turning orange to rust red in autumn. [1] The exfoliating, mottled bark has a puzzle-like pattern, and is considered attractive. [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] As with the species overall, damage caused by Japanese Beetle is relatively slight (< 8% defoliation). [3]
Allee is reputedly drought tolerant, but in the elm trials [2] conducted by Northern Arizona University at Holbrook, Arizona, Allee proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling Athena. The tree is being evaluated in the National Elm Trial [3] coordinated by Colorado State University. Allee has been introduced to Australia and Europe [ citation needed], and was marketed briefly in England by the Thornhayes Nursery, Devon.
(Widely available)
Ulmus parvifolia 'Emer II' | |
---|---|
![]() Ulmus parvifolia Allee, North Carolina Arboretum, Asheville, NC | |
Species | Ulmus parvifolia |
Cultivar | 'Emer II' or 'Emerald Vase' = Allee |
Origin | US |
Ulmus parvifolia 'Emer II' or 'Emerald Vase' (selling name Allee) is a Chinese Elm cultivar that was cloned from a tree planted circa 1910 on the University of Georgia campus at Athens.
Allee can reach a height of about 15 m, with a more upright crown shape than its stablemate Athena, its spread approximately 13 m, with arching branches bearing medium green, glossy leaves turning orange to rust red in autumn. [1] The exfoliating, mottled bark has a puzzle-like pattern, and is considered attractive. [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] As with the species overall, damage caused by Japanese Beetle is relatively slight (< 8% defoliation). [3]
Allee is reputedly drought tolerant, but in the elm trials [2] conducted by Northern Arizona University at Holbrook, Arizona, Allee proved unsuited to the hot, arid climate and sustained over 50% mortality in its first year, as did its sibling Athena. The tree is being evaluated in the National Elm Trial [3] coordinated by Colorado State University. Allee has been introduced to Australia and Europe [ citation needed], and was marketed briefly in England by the Thornhayes Nursery, Devon.
(Widely available)