- Ulmus pumila is a deciduous tree up to 70 ft. (21.3 m) in height. The crown is open and rounded with slender, spreading branches. The bark is light-gray with irregular furrows.
- The leaves are less than 3 in. (7.6 cm) long, alternate, simple, singly-serrate, and dark-green in color. Unlike most elms the leaf base is usually symmetrical.
- Green, inconspicuous, apetalous (without petals) flowers develop, in drooping clusters, in the spring.
- Fruits are flat, circular and 0.5 in. (1.3 cm) wide and each contains a single seed.
- Ecological Threat
- Ulmus pumila invades pastures, road-sides and prairies throughout the Midwest and Great Plains regions of the United States. The trees are very drought and cold resistant allowing it to grow in areas where other trees cannot. The abundant, wind-dispersed seeds allow this plant to spread rapidly. It forms dense thickets that close open areas and displace native vegetation, thereby reducing forage for wild animals and livestock. Ulmus pumila is native to northern Asia and was first introduced into North America in the 1860s. It has been planted throughout the Midwest and Great Plains for windbreaks and lumber.
- Plant Guide - USDA NRCS National Plant Data Center
- Weeds Gone Wild: Alien Plant Invaders of Natural Areas - Plant Conservation Alliance
- Weed of the Week - USDA Forest Service
- Weed Field Guide - USDA Forest Service
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- City of Ann Arbor Michigan Parks and Recreation
- Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
- Eric Ulaszek, U.S. Forest Service, Midewin National Tallgrass Prairie, Illinois
- Faith Campbell, 1998
- Great Lakes Early Detection Network
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Illinois Invasive Plant List
- Indiana Native Plant and Wildflower Society
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Maryland Cooperative Extension Service. 2003. Invasive Plant Control in Maryland. Home and Garden Information Center, Home and Garden Mimeo HG88. 4 pp.
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Minnesota Department of Natural Resources, 1998
- New Hampshire Restricted Invasive Species
- New Mexico Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pacific Northwest Exotic Pest Plant Council, 1998
- Reichard, Sarah. 1994. Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
- Virginia Invasive Plant Species List
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: ULPU
NPDN Pest: PFEAEBF
NPDN Host: 30143
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|