Identify the musk thistle (Carduus nutans), which is commonly found invading pastures, fields and meadows, by its hairless, spiny and alternately arranged leaves that have spiky and silvery edges. Identify the musk thistle (Carduus nutans), which is commonly found invading pastures, fields and meadows, by its hairless, spiny and alternately arranged leaves that have spiky and silvery edges. The stems of the native species do not have … A species profile for Musk Thistle. Musk Thistle a.k.a. Center for Invasive Species and Ecosystem Health. Google. Many insects feed on the leaves, stems, flowers and seeds, while some songbirds also feed on thistle seeds. Maps can be downloaded and shared. Musk thistle (also known as nodding thistle) overwinters in the rosette stage, four to eighteen inches wide. Musk thistle is similar to Canada thistle (Cirsium arvense [L.] Scop.) To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333). ]), also non-native in the US. Seen it? ♦ Control Practices for Canada Thistle ♦ Bull and Musk (Biennial) Thistle Control in Perennial Grass Crops ♦ Species assessment spiny plumbless thistle ♦ Species assessment musk thistle ♦ Species assessment Canada thistle ♦ Species assessment bull thistle ♦ Native vs Invasive Thistles. A robust plant may produce 100 or more flowering heads.Musk thistle flowers over a seven- to nine-week period. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. However, only one-third of the seeds are viable. Carduus nutans - Asteraceae Family - Biennial. Cooperative Extension Service. Alberta Invasive Species Council (Canada). Bull thistle (Cirsium vulgare; non-native) has prickly winged stems and leaves have prickly hair above, with white wooly hair below. Rosette formed first year; flowering stem el… It has spread quickly throughout much of the Midwest, but is not yet common in Ohio. It begins to disseminate seed from a head about two weeks after it first blooms. Musk Thistle he musk thistle or nodding thistle (Carduus nutans L.) is usually a bien- nial or winter annual, but it occasionally occurs as a sum- mer annual. It is native to regions of Europe and Asia. Musk thistle was introduced into the eastern United States in the early 1900s and is a well-known rangeland pest in the US. Crowds out native species and forage for livestock (Zouhar 2002) Musk thistle identification and control Carduus nutans This Class B noxious weed occurs in abundance in some parts of Washington State and is rare in others. Musk thistle is also known as nodding thistle and nodding plumeless thistle. Many native birds and insects utilize the various thistle species as a food source and for materials to build nests. It spreads rapidly in areas subjected to frequent natural Wheeler's thistle Look-alike native plants: Wheeler’s thistle (Cirsium wheeleri) with purple looks similar to Musk thistle. Its larvae feed on developing seed within the flower head. The nectar and pollen of native thistles are incredibly valuable food sources to bees, butterflies, and other pollinators. Bull thistle is erect, 2 to 5 feet tall with many spreading branches, spiny wings from leaves. Yellow to … Musk thistle is primarily a biennial or winter annual species. Or, to display all related content view all resources for Musk Thistle. The problem is ….This prickly weed reduces the quality of grazing land. Musk thistle is found throughout the U.S. except for Maine, Vermont, Florida, Alaska and Hawaii. Through the app or online. Musk thistle is also referred to as nodding thistle. Seeds: A single plant can produce up to 120,000 seeds annually, with seeds remaining viable in the soil up to 5 years. Leaves have few hairs, and typically the margins are greyish, giving the plant a … Our program staff can provide the property owner or appropriate public agency with site-specific advice on how best to remove it. Thistle plumes, especially musk thistle (Carduus nutans L.) pappus, were used to make paper during the 18th century. Become a certified small business contractor or supplier, Find certified small business contractors and suppliers, Washington State Noxious Weed Control Board. Its leaves are divided with spiny lobes, and its stems are winged and cottony. MUSK THISTLE CONTROL INTRODUCTION Musk thistle is an introduced invasive broadleaf weed native to Europe, Siberia, Asia Minor and North Af-rica. The musk thistle weevil was introduced as a biological control agent in the 1980’s and is common across the state. Musk thistle now occurs throughout most of the United States and is found in nearly all 105 Kansas counties. Musk thistle (Carduus nutans) is easily distinguished from other thistles in the state by its silvery leaf margins, and absence of hairs or fuzz and large, nodding flower heads. Musk thistle is a non-native biennial forb but can behave occasionally as an annual. Measure the width of the flowering head, referring to the black bract in Figure 2 … Spines at the end of each lobe, the tip spine is white. Musk thistle is one of 12 state-wide noxious weeds in Kansas infesting over 700,000 acres. Appearance Carduus nutans is an herbaceous, biennial plant that grows to 6 ft. (1.8 m) tall. Colorado Department of Agriculture. Musk thistle (Carduus nutans)Author: George Beck, Colorado State University Cooperative Extension Adapted from the Colorado State University Extension Natural Resources Fact Sheet "Musk Thistle"Identification and Life Cycle. Carduus species may hybridize with each other. Canada thistle (Cirsium arvense; invasive) does not have a winged stem or spines on its stem or flower heads. Musk thistle likely is the most easily identified invasive thistle in North Dakota, yet many people confuse this plant with either bull thistle or plumeless thistle. These native thistles are shorter and smaller than Musk thistle with more delicate stems and rosettes. USDA. Musk thistle can grow up to 7 feet tall and flowers with 50 to 100 reddish-purple blooms that are each 2 to 3 inches wide. Stems of musk thistle grow to 0.5-2.0m (1.5-6ft) tall, and are highly branched and spiny throughout. Nodding terminal compound pink-purple flowers May to August. The stems are commonly winged with spiny leaf tissue. Musk and plumeless thistles hybridize and are very similar in … The .gov means it’s official.Federal government websites always use a .gov or .mil domain. YouTube; Ag PhD: Information for Agriculture. Its scientific name is Carduus nutans L. of the family Asteraceae (Sunflower family). HABITAT IN THE UNITED STATES Musk thistle grows from sea level to about 8,000 ft elevation, in neutral to acidic soils. and triangular (e.g. It was first introduced into the United States in 1852 in Pennsylvania. For more information about musk thistle, please visit the website of the Washington State Noxious Weed Control Board (external link). Similar species: Native marsh thistle (Cirsium muticum) has non-spiny stems and flower heads. Report it! National Genetic Resources Program. Musk thistle is native to Europe and Asia, as with all species of Carduus (in contrast with Cirsium, of which there are about 100 native thistle species in the US). Second year plants usually bolt in late May. Department of the Environment and Energy. Musk thistle is also sometimes called "nodding thistle" because the flower heads can droop to a 90 degree angle instead of facing toward the sky. Tasmania Department of Primary Industries, Parks, Water, and Environment (Australia). Goldfinches feed on several thistle species, and bees utilize the plants to make an especially sweet honey. Please notify us if you see musk thistle growing in King County. Washington State Noxious Weed Control Board. be78ff24e6fc44c48948f1fc68f22c4b. National Invasive Species Information Center, Early Detection & Distribution Mapping System (EDDMapS) - Musk Thistle, Fact Sheet: Nodding Thistle (Jan 2014) (PDF | 700 KB), Southeast Exotic Pest Plant Council Invasive Plant Manual - Musk Thistle, Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Musk Thistle and Related Thistle Species (Feb 7, 2011) (PDF | 170 KB), Invasive Plant Atlas of the United States - Musk Thistle, PLANTS Database - Nodding Plumeless Thistle, Field Guide: Invasive - Musk Thistle (Nodding Thistle), Invasive Plants in Pennsylvania: Musk Thistle (PDF | 254 KB), Natural Resources Series: Range - Musk Thistle. Musk thistle generally is not a prob lem in cultivated cropland, but may germinate and develop in fallow fields or after winter wheat is planted in the fall. Musk thistle is a large, spiny biennial with rose-purple flower heads up to 2½ inches wide. Wisconsin Department of Natural Resources. Provides state, county, point and GIS data. musk thistle) is important for identification. Alaska Center for Conservation Science. Musk Thistle. State Noxious Weed. The plant forms basal rosettes during its first year, which have deeply lobed leaves that are up to 10 inches long and 4 inches wide, … The terminal, or tallest, shoots flower first, then lateral shoots develop in leaf axils. University of Arkansas. :1 noxious weed throughout Kansas in 1963. Noxious Weed Program. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Measure whether bracts collectively are greater than or less than 0.8 inches high, referring to the white bracket in Figure 2 for the length to measure. Musk thistle is a biennial thistle that is a rosette of leaves in its first year and sends up a flowering stalk in its second year, then dies. GRIN-Global. Most King County offices will be closed on December 25, for Christmas Day. The following spring, biennial thistles resume vegetative growth, bolt and then flower. Also called nodding thistle. https://www.fs.fed.us/database/feis/plants/forb/carnut/all.html ARS. Conservation Services Division. One plant can set up to 20,000 seeds. New South Wales Department of Primary Industries (Australia). Foliage Leaves are green and lanceolate to oblong-lanceolate. Musk thistle produces a basal rosette during the first year. Numerous flower heads are produced from May to October, depending on the species. Purple flowers are the identifying factor among the three species. The single or clustered purple flowers, 1.5-2” across, are borne at the ends of … and bull thistle (Cirsium vulgare [Savi. The section below contains highly relevant resources for this species, organized by source. Accidental, possibly through ballast water (, Crowds out native species and forage for livestock (. Identification. University of Alaska - Anchorage. Bull, musk and plumeless thistle (Cirsium vulgare, Carduus nutans and acanthoides) germinate in the summer and fall and overwinter as a rosette. Height to 10 ft.; rosette first year. Cooperative Extension. Cultural, mechanical, biological and chemical control methods have all been used on musk thistles with varying degrees of success in different parts of the country. We map all known locations of regulated noxious weeds such as musk thistle in order to help us and others locate new infestations in time to control them. See also: Included on California's noxious weed list; see. – Nodding thistle, Nodding Plumeless thistle Scientific name: Carduus nutans L. Family: Asteraceae (Sunflower family) Description Origin: Eurasia. Carduus nutans, with the common names musk thistle, nodding thistle, and nodding plumeless thistle, is a biennial herb in the Asteraceae—sunflower family. Musk thistle often grows in excess of 6 feet tall, has very large flowers that tend to droop, and the flower has … Pennsylvania Department of Conservation and Natural Resources. However, musk thistle can be distinguished from other thistles by its large, disk-shaped, apical flower heads. Avoid handling without gloves. This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The stem has very spiny wings. Musk thistle is a prolific seed producer. Information. How to identify The Musk thistle has a large, nodding, thistle-like flower head on each stem that comprises bright pink florets (tiny flowers) fringed by spiny bracts (leaf-like structures). Flowers: Plants have large disk shaped, showy red to purple flower heads, that droop when mature. It invades open natural areas such as meadows, prairies, and grassy balds. Musk thistle (Carduus nutans) is a biennial herbaceous plant, between one to seven feet tall. Native thistle provide important habitat and food sources for native fauna. Musk thistle was declared ! Australian Government. California Department of Food and Agriculture. Musk thistle can grow up to 7 feet tall and flowers with 50 to 100 reddish-purple blooms that are each 2 to 3 inches wide. Musk thistle has been reported in nearly every county in Kansas and is found primarily in pastures, rangeland, hay meadows, alfalfa, fallow, roadsides, and waste areas. Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. University of Nebraska - Lincoln. Introduced into the United States as an ornamental plant in the mid 1800s. Musk thistle produces many heads. Lobed, serrate leaves; serration shallower than plumeless thistle. University of Georgia. October, depending on the species advice on how best to remove it thistle... Prairies, and Environment ( Australia ) as nodding thistle and nodding thistle! 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