Very Invasive. U.S. National Plant Germplasm System - Lythrum salicaria Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. Wisconsin Department of Natural Resources. tomentosum (Mill.) Extension Service. of the Interior, Fish and Wildlife Service. Provides state, county, point and GIS data. LYSAV: Lythrum salicaria L. var. NOAA. Once established, however, L. salicaria can exist in a wide range of soil types. Thank you for your patience as we work on getting it back online. Small reddish-purple flowers grow in dense, showy spikes at the top of each stem. Yes, purple loosestrife has been documented throughout Washington. It was introduced to the east coast in the early 1800s, possibly as seeds in ship’s ballast or as an ornamental. tomentosum; L. salicaria var. We … University of Georgia. Exact date unknown; was established by the 1830s (, Through ships' ballast and as an ornamental (. Scientific name: Lythrum salicaria What Is It? Invasive Species - (Lythrum salicaria) Restricted in Michigan Purple Loosestrife is a perennial herb with a woody square stem covered in downy hair. NPS. 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. - 4 ft. 0 in. Fireweed, which has much larger flowers, alternate leaves, and does not grow in wetlands. Noxious Weed Program. Center for Environmental Research and Conservation. The flowers are magenta, and they are found on tall, narrow spikes from July to October. - 4 ft. 0 in. University of Maine. Lythrum salicaria (purple loosestrife) is a wetland herb (family Lythraceae) that invades scattered freshwater wetlands of northern and central California. Appearance. 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. Purple Loosestrife Lythrum salicaria, L. virgatum. DOI. YouTube; Vermont Agency of Natural Resources. (3.8-10.2 cm) long and round or heart-shaped at the base. University of Pennsylvania. Purple loosestrife has square stems, which help to tell it apart from some of the look-alikes that grow in the same areas. It was brought to North America in the early 1800s through a number of pathways including Smithsonian Institution. ARS. LYSAT: Lythrum salicaria L. var. Purple loosestrife is typically found invading lakeshores, wetlands, ponds, and wet pastures and ditches. Lythrum salicaria L. var. The flowers are showy and bright, and a number of cultivars have been selected for variation in flower colour, including: long (45 cm) held atop lance-shaped leaves. 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. Science of the American Southwest. 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. Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. However, it will tolerate drier conditions. This aggressive invader replaces native vegetation, degrades wildlife habitat, and obstructs natural waterways. Planting, sale, or other distribution without a permit is also prohibited in Indiana (312 IAC 14-24-12). Water and Land Resources Division. Smithsonian Environmental Research Center. The PRISM system is currently down. 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. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Ohio Agricultural Research and Development Center. Great Lakes Environmental Research Laboratory; DOI. 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. 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. Remove any plants from gardens to reduce seed sources and do not plant purple loosestrife. Washington, DC: U.S. Dept. 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. Alaska Center for Conservation Science. See also: Included on California's noxious weed list; see. Marine Invasions Research Lab. State designated noxious weed; pink to purple flowers bloom July-September; leaves are heartshaped; height to 8 ft. Habitat. Purple loosestrife can be identified by its oppositely arranged, It can quickly form dense stands that completely dominate the area excluding native vegetation. vulgare DC. Lythrum salicaria is capable of invading a variety of wetland habitats, including marshes, river and stream banks, pond edges, lakes, road site ditches, and reservoirs. 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. USDA. Cooperative Extension. Conservation Services Division. Where purple loosestrife dominates, the invasive plant can decrease food resources available for bog turtles. Purple loosestrife is a perennial invasive plant that was introduced to North America from Europe via seeds in ships’ ballast. Flowers: In long, crowded spikes, deep pink-purple, 5-7 petals, ½-¾" wide, mid-late summer in Maine. With its striking flowers, purple loosestrife (Lythrum salicaria) is a beautiful menace in wetland habitats. Pennsylvania Department of Conservation and Natural Resources. Invasive Species Identification Sheet - Purple Loosestrife Purple Loosestrife (Lythrum salicaria L.) herbaceous perennial with woody taproot that produces clusters of many stems 3'-10' tall; above-ground parts die back over Winter; dead stems may remain standing over Winter Lythrum virgatum 'Morden's Gleam' is a seedless, non-invasive Loosestrife. Scientific names: L. salicaria var. Thompson, D. Q. Hoshovsky (Editors). Spirea, which has flowers arranged in clusters and oblong, alternate leaves. It grows 3-5 feet tall and in July and August bears beautiful tall spikes of star-shaped, rose-pink flowers. Report a Sighting. Or, to display all related content view all resources for Purple Loosestrife. Invasive.org is a joint project of University of Georgia - Center for Invasive Species and Ecosystem Health, USDA Animal and Plant Health Inspection Service, USDA Forest Service, USDA Identification Technology Program, and USDA National Institute of Food and Agriculture Native primrose loosestrifes are yellow-flowered. It can quickly form dense stands that completely dominate the area excluding native vegetation. New Hampshire Department of Environmental Services. gracilior Turcz. National Genetic Resources Program. North Dakota State University. Ohio State University. Google. Stems are square and a plant may have more than 30 stems. University of Alaska - Anchorage. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. Lythrum salicaria is a tall, multistemmed (30-50 per plant), perennial forb that can grow up to 5 feet in height.. Foliage. DC. 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. Purple loosestrife forms dense stands that outcompete native plants for space, light, and pollinators, and provide poor habitat for waterfowl. Description. The Pennsylvania Flora Project of Morris Arboretum. DOC. 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. vulgare Ecological threat Prefers moist soils and shallow waters where it competes with native wetland plants. The exotic invasive wetland plant purple loosestrife (Lythrum salicaria) is often considered to have negative impacts on native plant and animal species, but this is debated. See also: Exotic Species Program - Publications for more resources. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands […] King County Department of Natural Resources (Washington). 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 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. May grow up to 6 feet tall and 4-5 feet wide. Purple loosestrife is a vigorous competitor and can crowd out other vegetation including native species. Native hyssop loosestrifes are shorter with white to rose petals. of the Interior, Fish and Wildlife Service. Washington Invasive Species Council. Fish & Wildlife Department. The Arrival. Horticulturists subsequently propagated it as an ornamental bedding plant. Purple Loosestrife Lythrum salicaria is Naturalized in Texas and other States and is considered an invasive and noxious plant in Texas. Has a shrub-like appearance, but dies back each year. Although many alien invasive plants have naturalized by escaping gardens, purple loosestrife basically began naturalizing on its own in rural areas. Now the highest concentrations of the plant occur … Ontario's Invading Species Awareness Program (Canada). Purple loosestrife's appearance is similar to fireweed and spirea and is sometimes found growing with … Wildlife and Heritage Service. Randall, and M.C. Maps can be downloaded and shared. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. It is a very variable species with an ability to occupy numerous habitats and substrates with the exception of dry places. 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. 2000. The opposite or whorled leaves are dark-green, lance-shaped, sessile, 1.5-4 in. This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. Washington, DC: U.S. Dept. University of Minnesota. Invasive Species Program; Species; Plants; Purple Loosestrife; Purple Loosestrife. In online book: Bossard, C.C., J.M. Appearance. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands throughout the United States. Leaves are opposite, hairy, and lance-shaped. Infestations are found in northern California and the San Francisco Bay Area, as well as along rivers in the southern Sierra. (New York) Columbia University. It alters the structure and function of wetlands, clogs waterways and irrigation system, affects rice and other agricultural production, and reduces livestock forage quality. Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC). It has gradually spread throughout much of the United Stat… Maryland Department of Natural Resources. Native to Eurasia, purple loosestrife ( Lythrum salicaria) now occurs in almost every state of the US. Colorado Department of Agriculture. The opposite or whorled leaves are dark-green, lance-shaped, sessile, 1.5-4 inches long and round or heart-shaped at the base. The section below contains highly relevant resources for this species, organized by source. Description: Robust, perennial herb, 4-6', base of mature plant feels woody. Clarifying its influence would provide insight into appropriate management actions following invasion. Purple loosestrife is listed as a Class B Noxious Weed in Washington, meaning it is designated for control in certain state regions. Asynchronous flowering - bottom of spikes open first. GRIN-Global. Lythrum salicaria, commonly called purple loosestrife, is a clump-forming wetland perennial that is native to Europe and Asia. Width: 2 ft. 0 in. Purple loosestrife (Lythrum Salicaria) is a perennial herb with bright magenta flowers of 5 to 7 petals during the majority of the summer months.Depending on environmental conditions, the herb can be 4 to 10 ft tall, and is always covered with a cotton or downy-like texture. Washington State Recreation and Conservation Office. Find out how. Description. The plant prefers moist soil with neutral to slightly acidic pH. Washington State Noxious Weed Control Board. 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. Lythrum salicaria L. purple loosestrife Family: Lythraceae: large population: isolated clump: single plant: inflorescence: flowers: leaf: stem and leaves : Purple loosestrife is an invasive species of sunny wetlands. Alberta Invasive Species Council (Canada). Purple Loosestrife (Lythrum salicaria) 1 Introduction Purple loosestrife (Lythrum salicaria L.) is an invasive, emergent, perennial plant, native to Europe and Asia. California Department of Food and Agriculture. (1987). Loosestrife stands provide poor cover for waterfowl. It can quickly dominate a site and adapt to environmental changes.
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