DC. 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. Smithsonian Environmental Research Center. 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. Minnesota Sea Grant. YouTube; Vermont Agency of Natural Resources. University of Pennsylvania. Loosestrife stands provide poor cover for waterfowl. U.S. National Plant Germplasm System - Lythrum salicaria Where purple loosestrife dominates, the invasive plant can decrease food resources available for bog turtles. Description. It can quickly dominate a site and adapt to environmental changes. Leaves are opposite, hairy, and lance-shaped. The plant prefers moist soil with neutral to slightly acidic pH. Remove any plants from gardens to reduce seed sources and do not plant purple loosestrife. Now the highest concentrations of the plant occur … of the Interior, Fish and Wildlife Service. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands […] 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. 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. Pennsylvania Department of Conservation and Natural Resources. New Hampshire Department of Environmental Services. Purple loosestrife is a vigorous competitor and can crowd out other vegetation including native species. Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. University of Georgia. 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. It is native to Europe and Asia, and is responsible for a considerable amount of the degradation to wetlands throughout the United States. It features pink, purple or magenta flowers in dense spikes, up to 18 in. 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 gradually spread throughout much of the United Stat… Purple loosestrife has square stems, which help to tell it apart from some of the look-alikes that grow in the same areas. Or, to display all related content view all resources for Purple Loosestrife. gracilior Turcz. Report a Sighting. 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. The flowers are showy and bright, and a number of cultivars have been selected for variation in flower colour, including: Purple loosestrife is listed as a Class B Noxious Weed in Washington, meaning it is designated for control in certain state regions. Marine Invasions Research Lab. 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. Fish & Wildlife Department. It can quickly form dense stands that completely dominate the area excluding native vegetation. Description: Robust, perennial herb, 4-6', base of mature plant feels woody. Scientific names: L. salicaria var. Infestations are found in northern California and the San Francisco Bay Area, as well as along rivers in the southern Sierra. Lythrum salicaria (purple loosestrife) is a wetland herb (family Lythraceae) that invades scattered freshwater wetlands of northern and central California. University of Maine. Stems are square and a plant may have more than 30 stems. It alters the structure and function of wetlands, clogs waterways and irrigation system, affects rice and other agricultural production, and reduces livestock forage quality. Purple loosestrife is typically found invading lakeshores, wetlands, ponds, and wet pastures and ditches. ARS. Hoshovsky (Editors). Conservation Services Division. The PRISM system is currently down. Invasive Species Program; Species; Plants; Purple Loosestrife; Purple Loosestrife. It grows 3-5 feet tall and in July and August bears beautiful tall spikes of star-shaped, rose-pink flowers. King County Department of Natural Resources (Washington). Width: 2 ft. 0 in. Cooperative Extension. Washington State Noxious Weed Control Board. Wildlife and Heritage Service. 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. 2019 Status in Maine: Widespread. 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. The opposite or whorled leaves are dark-green, lance-shaped, sessile, 1.5-4 in. However, it will tolerate drier conditions. vulgare DC. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. The opposite or whorled leaves are dark-green, lance-shaped, sessile, 1.5-4 inches long and round or heart-shaped at the base. Wisconsin Department of Natural Resources. This aggressive invader replaces native vegetation, degrades wildlife habitat, and obstructs natural waterways. Lythrum salicaria. Thank you for your patience as we work on getting it back online. 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. Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. Maryland Department of Natural Resources. University of Alaska - Anchorage. May grow up to 6 feet tall and 4-5 feet wide. Minnesota Department of Natural Resources. As illustrated above, it can be very aggressive and it displaces native species. GRIN-Global. (3.8-10.2 cm) long and round or heart-shaped at the base. The section below contains highly relevant resources for this species, organized by source. Google. USGS. In online book: Bossard, C.C., J.M. DOI. Center for Invasive Species and Ecosystem Health. 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. Ontario's Invading Species Awareness Program (Canada). NOAA. See also: Included on California's noxious weed list; see. LYSAV: Lythrum salicaria L. var. Scientific name: Lythrum salicaria What Is It? Horticulturists subsequently propagated it as an ornamental bedding plant. Ohio Agricultural Research and Development Center. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Native primrose loosestrifes are yellow-flowered. Fireweed, which has much larger flowers, alternate leaves, and does not grow in wetlands. With its striking flowers, purple loosestrife (Lythrum salicaria) is a beautiful menace in wetland habitats. Small reddish-purple flowers grow in dense, showy spikes at the top of each stem. 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. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. Randall, and M.C.
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