| Japanese spiraea |
USDA PLANTS Symbol: SPJA USDA ARS GRIN: 35295 ITIS: 25335 |
| Spiraea japonica L. f. | |
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Taxonomic Rank: Magnoliopsida: Rosales: Rosaceae |
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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. |
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Identification, Biology, Control and Management Resources
- Weed of the Week - USDA Forest Service
- Weeds Gone Wild: Alien Plant Invaders of Natural Areas - Plant Conservation Alliance
- Southeast Exotic Pest Plant Council Invasive Plant Manual - SE-EPPC
- Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
- Fact Sheet - Pennsylvania Dept. of Conservation and Natural Resources
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Foliage; 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 |
 Foliage; 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 |
 Flower(s); James H. Miller, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Great Smoky Mountains National Park Resource Management Archive, USDI National Park Service, Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); James H. Miller, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Seed(s); Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Nancy Fraley, USDI National Park Service, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Nancy Fraley, USDI National Park Service, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; 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 |
Taxonomic References:
- USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Invasive Listing Sources:
- Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
- Faith Campbell, 1998. Plants that Hog the Garden: Invasive Plants in the United States. Fine Gardening Online
- 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 Department of Natural Resources, 1994
- Mid-Atlantic Exotic Pest Plant Council, 2005
- New Jersey Department of Agriculture, Division of Plant Industry, 2004
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Reichard, Sarah. 1994. Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
- Virginia Department of Conservation and Recreation, 1999.
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Georgia Exotic Pest Plant Council Category 2
- Kentucky Exotic Pest Plant Council Significant Threat
- South Carolina Exotic Pest Plant Council Watch A
- Tennessee Exotic Pest Plant Council Severe Threat
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