It was introduced to the east coast in the early 1800s, possibly as seeds in ship’s ballast or as an ornamental. Purple Loosestrife (Lythrum salicaria) 1 Introduction Purple loosestrife (Lythrum salicaria L.) is an invasive, emergent, perennial plant, native to Europe and Asia. Minnesota Department of Natural Resources. DC. Purple loosestrife forms dense stands that outcompete native plants for space, light, and pollinators, and provide poor habitat for waterfowl. California Department of Food and Agriculture. Wildlife and Heritage Service. Washington, DC: U.S. Dept. 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. USGS. Purple loosestrife can be identified by its oppositely arranged, Ohio Agricultural Research and Development Center. University of Maine. Find out how. Purple loosestrife is a perennial invasive plant that was introduced to North America from Europe via seeds in ships’ ballast. In online book: Bossard, C.C., J.M. University of Georgia. Yes, purple loosestrife has been documented throughout Washington. May grow up to 6 feet tall and 4-5 feet wide. This aggressive invader replaces native vegetation, degrades wildlife habitat, and obstructs natural waterways. Invasive Species - (Lythrum salicaria) Restricted in Michigan Purple Loosestrife is a perennial herb with a woody square stem covered in downy hair. It features pink, purple or magenta flowers in dense spikes, up to 18 in. Native primrose loosestrifes are yellow-flowered. It varies in height from 4 - 10 feet. U.S. National Plant Germplasm System - Lythrum salicaria Alberta Invasive Species Council (Canada). Scientific name: Lythrum salicaria What Is It? tomentosum; L. salicaria var. 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. Maryland Department of Natural Resources. Conservation Services Division. Center for Environmental Research and Conservation. Scientific names: L. salicaria var. of the Interior, Fish and Wildlife Service. State designated noxious weed; pink to purple flowers bloom July-September; leaves are heartshaped; height to 8 ft. Habitat. King County Department of Natural Resources (Washington). Provides state, county, point and GIS data. It is a very variable species with an ability to occupy numerous habitats and substrates with the exception of dry places. Purple Loosestrife Lythrum salicaria, L. virgatum. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. tomentosum (Mill.) North Dakota State University. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. It can quickly form dense stands that completely dominate the area excluding native vegetation. YouTube; Vermont Agency of Natural Resources. Stems are square and a plant may have more than 30 stems. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands […] Lythrum salicaria is a tall, multistemmed (30-50 per plant), perennial forb that can grow up to 10 ft. (3 m) in height.. Foliage. 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. 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. Description. Maps can be downloaded and shared. Native hyssop loosestrifes are shorter with white to rose petals. 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 State Noxious Weed Control Board. Leaves are opposite, hairy, and lance-shaped. (New York) Columbia University. DOC. Cooperative Extension. NPS. Purple loosestrife has square stems, which help to tell it apart from some of the look-alikes that grow in the same areas. 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. It has been used as an astringent medicinal herb to treat diarrhea and dysentery; it is considered safe to use for all ages, including babies. Clarifying its influence would provide insight into appropriate management actions following invasion. Lythrum salicaria is a serious invader of many types of wetlands, including wet meadows, prairie potholes, river and stream banks, lake shores, tidal and nontidal marshes, and ditches. Wetland and Aquatic Research Center. Or, to display all related content view all resources for Purple Loosestrife. The opposite or whorled leaves are dark-green, lance-shaped, sessile, 1.5-4 in. See also: Exotic Species Program - Publications for more resources. Purple loosestrife's appearance is similar to fireweed and spirea and is sometimes found growing with … 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. Purple Loosestrife Lythrum salicaria is Naturalized in Texas and other States and is considered an invasive and noxious plant in Texas. Purple loosestrife (Lythrum salicaria, L. virgatum and any combination thereof) is listed as a MDA Prohibited Noxious Weed (Control List) and a prohibited invasive species in Minnesota, which means it is unlawful (a misdemeanor) to possess, import, purchase, transport or introduce this species except under a permit for disposal, control, research or education. Lythrum salicaria. Now the highest concentrations of the plant occur … It has gradually spread throughout much of the United Stat… vulgare DC. Loosestrife stands provide poor cover for waterfowl. Extension Service. ARS. We … DOI. of the Interior, Fish and Wildlife Service. GRIN-Global. Thompson, D. Q. You can help prevent the spread of invasive species! LYSAT: Lythrum salicaria L. var. 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. It grows 3-5 feet tall and in July and August bears beautiful tall spikes of star-shaped, rose-pink flowers. Remove any plants from gardens to reduce seed sources and do not plant purple loosestrife. Lythrum salicaria is listed as an exotic weed in Illinois (525 ILCS 10/3, 10/4) making it illegal to buy, sell or distribute plants, its seeds, or any part without a permit. Lythrum salicaria L. var. Smithsonian Environmental Research Center. It can quickly dominate a site and adapt to environmental changes. Appearance. Washington Invasive Species Council. LYSAV: Lythrum salicaria L. var. Planting, sale, or other distribution without a permit is also prohibited in Indiana (312 IAC 14-24-12). It was brought to North America in the early 1800s through a number of pathways including Negative: On Sep 7, 2006, NJChickadee from Egg Harbor Township, NJ wrote: The problem with this beautiful plant is that it is very invasive, crowding out native plants. Width: 2 ft. 0 in. Wisconsin Department of Natural Resources. Although many alien invasive plants have naturalized by escaping gardens, purple loosestrife basically began naturalizing on its own in rural areas. Lythrum Species: salicaria Family: Lythraceae Life Cycle: Perennial Recommended Propagation Strategy: Division Seed Stem Cutting Country Or Region Of Origin: Europe, Africa and Asia-Temperate Distribution: Naturalized and invasive in the USA Dimensions: Height: 2 ft. 0 in. As illustrated above, it can be very aggressive and it displaces native species. Lythrum salicaria is a tall, multistemmed (30-50 per plant), perennial forb that can grow up to 5 feet in height.. Foliage. - 4 ft. 0 in. The flowers are magenta, and they are found on tall, narrow spikes from July to October. Alaska Center for Conservation Science. 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.
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