The
Siberian elm cultivar ''Ulmus pumila'' 'Green King' was once believed to have been derived from a crossing of the
Siberian Elm ''
Ulmus pumila'' with the American
Red Elm
''Ulmus rubra'', the slippery elm, is a species of elm native to eastern North America.
Other common names include red elm, gray elm, soft elm, moose elm, and Indian elm.
Description
''Ulmus rubra'' is a medium-sized deciduous tree with a spre ...
''
Ulmus rubra
''Ulmus rubra'', the slippery elm, is a species of elm native to eastern North America.
Other common names include red elm, gray elm, soft elm, moose elm, and Indian elm.
Description
''Ulmus rubra'' is a medium-sized deciduous tree with a sprea ...
''. However, it is now apparent the tree originated as a sport of ''U. pumila'' in 1939 at the Neosho Nurseries,
Neosho,
Missouri.
Description
The tree typically forms a wide base and conical crown,
not dissimilar to the European
Hornbeam ''
Carpinus betulus
''Carpinus betulus'', the European or common hornbeam, is a species of tree in the birch family Betulaceae, native to Western Asia and central, eastern, and southern Europe, including southern England. It requires a warm climate for good growth, ...
'' 'Fastigiata' (known as 'Pyramidalis').
Pests and diseases
See under ''
Ulmus pumila''.
Cultivation
Green King's rate of growth is claimed to be from 2.5 m (8') to 3.4 m (11') per annum, and it offers significant resistance to wind and drought. The tree featured in the elm trial
conducted by
Northern Arizona University
Northern Arizona University (NAU) is a public research university based in Flagstaff, Arizona. It was founded in 1899 as the final public university established in the Arizona Territory, 13 years before Arizona was admitted as the 48th state.
...
at
Holbrook, where it was noted that "the hybrid (sic) had not been widely tested for resistance to DED (
Dutch elm disease)". Its performance in the Arizona trials seems to have been insufficiently good or bad to warrant any further comment. Although the tree remains commercially available in the United States, it is no longer widely planted, having been eclipsed by later developments such as
'Homestead' and disease-resistant cultivars of the
American Elm ''U. americana''. Moreover, its planting, as a clone of the Siberian Elm, is prohibited in
Nevada and
Oregon. The tree is not known to have been introduced to Europe or Australasia.
Synonymy
*''Ulmus'' 'Broadleaf Hybrid': Kammerer, E. L. in ''Bull. Pop. Inf. Morton Arb.'' 36 (5): 25, 1961.
*''Ulmus'' 'Field's New Hybrid Elm': Henry Field Seed & Nursery Co.,
Shenandoah,
Iowa, (who renamed the tree 'Green King' c. 1960).
*''Ulmus'' 'Green King': Morton Arboretum Catalogue, 2006.
*''Ulmus'' 'Neosho'
Accessions
North America
*
Morton Arboretum, US. Acc. no. 78–69, (listed simply as ''Ulmus'' 'Green King').
Europe
*
Grange Farm Arboretum,
Lincolnshire, UK. Acc. no. 1263, (listed simply as ''Ulmus'' 'Green King').
Nurseries
North America
*Stark Bros Nurseries & Orchards Co.,
Louisiana,
Missouri, US.
References
External links
*http://www.ag.ndsu.nodak.edu/aginfo/trees/handbook/th-3-117.pdf Siberian Elm and its derivatives.
{{DEFAULTSORT:Ulmus Pumila 'Green King'
Siberian elm cultivar
Ulmus articles missing images
Neosho, Missouri
Flora of Missouri