Japanese spiraea USDA PLANTS Symbol: SPJA
U.S. Nativity: Exotic
Habit: Shrub or Subshrub
Spiraea japonica L. f.

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Taxonomic Rank: Magnoliopsida: Rosales: Rosaceae
Native Range: Japan (REHD);

Japanese spiraea is a small, deciduous shrub up to 6 ft. (1.8 m) tall that invades a variety of habitats throughout the eastern United States. The alternate leaves are oval to lance shaped, toothed along the margins and 1-3 in. (2.5-7.6 cm) long. In late spring white to pink flowers occur in clusters at the tips of branches. Japanese spiraea invades a variety of habitats including fields, forests, stream banks and many disturbed areas. Once established, it can form dense stands which displace native vegetation and close open areas. Japanese spiraea is native to eastern Asia and was first introduced into the United States around 1879 as an ornamental.

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at Invasive.org


Flower(s);
Great Smoky Mountains National Park Resource Management Archive, USDI National Park Service, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
James H. Miller, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 246.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Nancy Dagley, USDI National Park Service, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Nancy Dagley, USDI National Park Service, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

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U.S. National Parks where reported invasive:
Great Smoky Mountains National Park (North Carolina & Tennessee)



Invasive Listing Sources:
Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
Faith Campbell, 1998
Georgia Exotic Pest Plant Council
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.
Kentucky Exotic Pest Plant Council
Maryland Department of Natural Resources, 1994
Mid-Atlantic Exotic Pest Plant Council, 2005
New Jersey Department of Agriculture, Division of Plant Industry, 2004
Reichard, Sarah. 1994.  Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
South Carolina Exotic Pest Plant Council
Tennessee Exotic Pest Plant Council
Virginia Department of Conservation and Recreation, 2009