A perennial from Europe, purple loosestrife (Lythrum salicaria)usually grows from 3-5 feet tall, but can reach a height of up to 7 feet. Minnesota Sea Grant. It features pink, purple or magenta flowers in dense spikes, up to 18 in. Native primrose loosestrifes are yellow-flowered. LYSAV: Lythrum salicaria L. var. Scientific names: L. salicaria var. Stems are square and a plant may have more than 30 stems. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. Extension Service. of the Interior, Fish and Wildlife Service. Colorado Department of Agriculture. Invasive Species Program; Species; Plants; Purple Loosestrife; Purple Loosestrife. Purple loosestrife's appearance is similar to fireweed and spirea and is sometimes found growing with … Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. ARS. University of Minnesota. Ontario's Invading Species Awareness Program (Canada). L. salicaria, an Old World native, is a highly invasive species of wetlands in North America, beginning to spread rapidly about 140 years after its accidental introduction around 1800. Minnesota Department of Natural Resources. Exact date unknown; was established by the 1830s (, Through ships' ballast and as an ornamental (. Alberta Invasive Species Council (Canada). Or, to display all related content view all resources for Purple Loosestrife. LYSAT: Lythrum salicaria L. var. Although many alien invasive plants have naturalized by escaping gardens, purple loosestrife basically began naturalizing on its own in rural areas. Maps can be downloaded and shared. Science of the American Southwest. It was brought to North America in the early 1800s through a number of pathways including DOC. Lythrum salicaria is a tall, multistemmed (30-50 per plant), perennial forb that can grow up to 5 feet in height.. Foliage. We … Planting, sale, or other distribution without a permit is also prohibited in Indiana (312 IAC 14-24-12). Spectacular when in full bloom, Purple Loosestrife (Lythrum salicaria) is a vigorous, upright perennial enjoying an extremely long bloom season from late spring to late summer. Washington, DC: U.S. Dept. Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC). Invasive Species - (Lythrum salicaria) Restricted in Michigan Purple Loosestrife is a perennial herb with a woody square stem covered in downy hair. Native to Eurasia, purple loosestrife ( Lythrum salicaria) now occurs in almost every state of the US. of the Interior, Fish and Wildlife Service. Lythrum virgatum 'Morden's Gleam' is a seedless, non-invasive Loosestrife. Washington, DC: U.S. Dept. USGS. Purple Loosestrife (Lythrum salicaria) 1 Introduction Purple loosestrife (Lythrum salicaria L.) is an invasive, emergent, perennial plant, native to Europe and Asia. Loosestrife stands provide poor cover for waterfowl. Infestations are found in northern California and the San Francisco Bay Area, as well as along rivers in the southern Sierra. Maryland Department of Natural Resources. It is also cultivated as an ornamental plant in gardens, and is particularly associated with damp, poorly drained locations such as marshes, bogs and watersides. Purple loosestrife has square stems, which help to tell it apart from some of the look-alikes that grow in the same areas. While not a threat to most terrestrial crop systems, purple loosestrife has affected the production of wild hay and wild rice, primarily in mid-Western prairie pothole wetlands. Washington Invasive Species Council. Center for Invasive Species and Ecosystem Health, King County - Purple lossestrife identification and control, Washington State Noxious Weed Control Board, Columbia Basin Cooperative Weed Management Area, Invasive Species Research, Control, and Policy Forums, Washington’s Urban Forest Pest Readiness Plan, Lake Roosevelt Invasive Mussel Rapid Response Exercise, Scotch Broom Ecology and Management Symposium, Steve Dewey, Utah State Univ., Bugwood.org, Norman Rees, USDA Agricultural Research Service, Bugwood.org, John Byrd, Mississippi State Univ., Bugwood.org. NPS. Width: 2 ft. 0 in. See also: Exotic Species Program - Publications for more resources. Center for Invasive Species and Ecosystem Health. The Pennsylvania Flora Project of Morris Arboretum. You can help prevent the spread of invasive species! Purple loosestrife (Lythrum salicaria), a beautiful but aggressive invader, arrived in eastern North America in the early 1800’s.Plants were brought to North America by settlers for their flower gardens, and seeds were present in the ballast holds of European ships that used soil to weigh down the vessels for stability on the ocean. The highly invasive nature of purple loosestrife allows it to form dense, homogeneous stands that restrict native wetland plant species, including some federally endangered orchids, and reduce habitat for waterfowl. It has leaves that are arranged in pairs or whorls and magenta flower spikes with 5 - 7 petals per flower that are present for most of the summer. Lythrum salicaria is a tall, multistemmed (30-50 per plant), perennial forb that can grow up to 10 ft. (3 m) in height.. Foliage. U.S. National Plant Germplasm System - Lythrum salicaria Purple loosestrife is a tall, perennial wetland plant with reddish-purple flowers, which may be found in sunny wetlands, wet meadows, river and stream banks, ponds edges, reservoirs, and ditches. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands […] The section below contains highly relevant resources for this species, organized by source. In online book: Bossard, C.C., J.M. Fish & Wildlife Department. The PRISM system is currently down. Purple loosestrife is listed as a Class B Noxious Weed in Washington, meaning it is designated for control in certain state regions. (3.8-10.2 cm) long and round or heart-shaped at the base. North Dakota State University. Asynchronous flowering - bottom of spikes open first. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. - 4 ft. 0 in. Lythrum salicaria. It is believed to have been first introduced into the U.S. from seed contained in ships ballast, and it became established in certain estuaries in the northeastern states by the early 1800s. It varies in height from 4 - 10 feet. Water and Land Resources Division. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands throughout the United States. See also: Included on California's noxious weed list; see. It is a very variable species with an ability to occupy numerous habitats and substrates with the exception of dry places. tomentosum; L. salicaria var. However, it will tolerate drier conditions. Noxious Weed Program. The Arrival. Purple Loosestrife Lythrum salicaria, L. virgatum. Has a shrub-like appearance, but dies back each year. Remove any plants from gardens to reduce seed sources and do not plant purple loosestrife. Scientific Name: Lythrum salicaria L. Purple loosestrife (Lythrum salicaria L.) is a wetland perennial that forms large, monotypic stands throughout the temperate regions of the U.S. and Canada. National Invasive Species Information Center, Early Detection & Distribution Mapping System (EDDMapS) - Purple Loosestrife, Pest Tracker - Survey Status of Purple Loosestrife, Fact Sheet: Purple Loosestrife (Jan 2014) (PDF | 986 KB), Invasive Plants of California's Wildlands -, Invasive Plants of California's Wildlands, Invasive Plants of Ohio: Fact Sheet 4 - Purple Loosestrife (PDF | 319 KB), Southeast Exotic Pest Plant Council Invasive Plant Manual - Purple Loosestrife, Species of Concern Fact Sheet: Purple Loosestrife, Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Purple Loosestrife and European Wand Loosestrife (Feb 8, 2011) (PDF | 168 KB), Invasive Plant Atlas of the United States - Purple Loosestrife, New York Invasive Species Information - Purple Loosestrife, Plantwise Technical Factsheet - Purple Loosestrife (, The Quiet Invasion: A Guide to Invasive Species of the Galveston Bay Area - Purple Loosestrife, Exotic Species: Purple Loosestrife (2010), National Exotic Marine and Estuarine Species Information System (NEMESIS): Chesapeake Bay Introduced Species Database -, Spread, Impact, and Control of Purple Loosestrife (, Environmental Fact Sheet: Purple Loosestrife (2019) (PDF | 767 KB), Aquatic Invasive Species - Purple Loosestrife, Field Guide: Invasive - Purple Loosestrife, Invasive Plants in Pennsylvania: Purple Loosestrife (PDF | 128 KB), King County (Washington) Noxious Weed Control Program - Purple Loosestrife, Maryland's Invasive and Exotic Species - Purple Loosestrife, Noxious Weed Species - Purple Loosestrife, Aquatic Invasive Species in the Chesapeake Bay - Purple Loosestrife (Sep 2013) (PDF | 115 KB), Invasive Plant Fact Sheet - Purple Loosestrife (Nov 2011) (PDF | 189 KB), Identification and Control of Purple Loosestrife, Introduced Species Summary Project - Purple loosestrife, Maine Invasive Plants Bulletin: Purple Loosestrife, Ohio Perennial & Biennial Weed Guide - Purple Loosestrife, Purple Loosestrife: What You Should Know, What You Can Do, Noxious Weed Information - Purple Loosestrife.
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