Articles
Northern Empress® Japanese elm and Cinnamon Curls® dwarf Korean birch: new ornamental woody plant releases
Article number
1185_2
Pages
7 – 10
Language
English
Abstract
The North Dakota State University (NDSU) Woody Plant Improvement Program (WPIP) has been servicing the Northern Great Plains for 60 years, beginning germplasm trial evaluations in 1954. The program has evaluated 200+ genera and 3,000+ species and cultivars of trees and shrubs.
Recently, two new releases were made from the NDSU WPIP. ‘Burgundy Glow’ is a new cultivar of Ulmus davidiana Planch. var. japonica (Sarg. ex Rehd.) Nakai (common name is Japanese elm). ‘Burgundy Glow’ is a very hardy small to medium sized growing elm with a rounded crown, open branching, and attractive summer and fall foliage.
Fall foliage of ‘Burgundy Glow’ changes from green to apricot-orange to burgundy-red before leaf senescence. ‘Burgundy Glow’ is approximately 8.5 m tall with a crown width of 7.0-7.5 m after 35 years and is a smaller stature tree as compared to the species.
It is adapted to USDA cold hardiness zone 3b to 7 and performs well on a wide range of soil types.
This smaller statured elm selection is suitable for use as a small to medium sized ornamental tree in urban landscape planting areas.
This is especially relevant where available space or overhead power lines are a concern and where hardiness of other elm cultivars may be an issue. ‘Burgundy Glow’ is sold under the trademark Northern Empress® (U.S. Trademark Reg.
No. 4,662,503, registered Dec. 30, 2014). ‘CinnDak’ is a new cultivar of Betula costata Trautv. (common names include Korean, Manchurian or costata birch). ‘CinnDak’ has a compact dwarf habit with a well-branched crown and ornamental exfoliating colored bark. ‘CinnDak’ is approximately 2.7 m with a crown width of 2.4-2.7 m after 30 years where seasonal growth over the last five years averaged 18.0 cm.
It is adapted to USDA cold hardiness zones 3a to 7 and performs well on a wide range of soil types.
This compact selection is suitable as a small tree specimen in the landscape, with multi-season interest, as a result of high quality summer foliage, reliable golden fall color, and high quality ornamental exfoliating bark. ‘CinnDak’ is sold under the trademark Cinnamon Curls® (U.S. Trademark Reg.
No. 4,668,972, registered Jan. 6, 2015).
Recently, two new releases were made from the NDSU WPIP. ‘Burgundy Glow’ is a new cultivar of Ulmus davidiana Planch. var. japonica (Sarg. ex Rehd.) Nakai (common name is Japanese elm). ‘Burgundy Glow’ is a very hardy small to medium sized growing elm with a rounded crown, open branching, and attractive summer and fall foliage.
Fall foliage of ‘Burgundy Glow’ changes from green to apricot-orange to burgundy-red before leaf senescence. ‘Burgundy Glow’ is approximately 8.5 m tall with a crown width of 7.0-7.5 m after 35 years and is a smaller stature tree as compared to the species.
It is adapted to USDA cold hardiness zone 3b to 7 and performs well on a wide range of soil types.
This smaller statured elm selection is suitable for use as a small to medium sized ornamental tree in urban landscape planting areas.
This is especially relevant where available space or overhead power lines are a concern and where hardiness of other elm cultivars may be an issue. ‘Burgundy Glow’ is sold under the trademark Northern Empress® (U.S. Trademark Reg.
No. 4,662,503, registered Dec. 30, 2014). ‘CinnDak’ is a new cultivar of Betula costata Trautv. (common names include Korean, Manchurian or costata birch). ‘CinnDak’ has a compact dwarf habit with a well-branched crown and ornamental exfoliating colored bark. ‘CinnDak’ is approximately 2.7 m with a crown width of 2.4-2.7 m after 30 years where seasonal growth over the last five years averaged 18.0 cm.
It is adapted to USDA cold hardiness zones 3a to 7 and performs well on a wide range of soil types.
This compact selection is suitable as a small tree specimen in the landscape, with multi-season interest, as a result of high quality summer foliage, reliable golden fall color, and high quality ornamental exfoliating bark. ‘CinnDak’ is sold under the trademark Cinnamon Curls® (U.S. Trademark Reg.
No. 4,668,972, registered Jan. 6, 2015).
Authors
T.P. West
Keywords
Ulmus davidiana Planch. var. japonica, Betula costata Trautv
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