References Beck, K.G., “Musk Thistle”, Colorado State University, Fact Sheet 3.102 Gassmann, A. Establishment of an extensive population of musk thistle is dependent on the availability of light and water. areas and is sensitive to competition. Journal of Range Management 26(5):383-385; 1973. Musk thistle : Nonnative, noxious : Purple; single very large nodding flower at end of stem; purple bracts : Deeply lobed, dark green with light green midrib; spiny margins : Spiny winged : 1-6feet : Biennial : Onopordum acanthium ; Scotch thistle : Nonnative, noxious : Purple; large upright flowerheads; bracts are spine-tipped : … Musk thistle is shade intolerant. Musk thistle is similar to Canada thistle (Cirsium arvense) and bull thistle (Cirsium vulgare) and the plumeless thistle (Carduus acanthoides), all three of which are invasive. Musk Thistle   a.k.a. Search “thistle” or “invasive”. There is some evidence of hybridization occurring between musk – Nodding thistle, Nodding Plumeless thistle  Scientific name:  Carduus nutans L.Family:  Asteraceae (Sunflower family). It was discovered in Davidson County, Tennessee in 1942 and spread quickly throughout the state. The Nature Conservancy, Arlington, VA; 1985. Musk thistle is not palatable to livestock. Musk thistle is a prolific seed producer. Heidel, B. Carduus nutans: element stewardship abstract. Beck* Musk thistle is an aggressive weed of foreign origin that occurs in pastures, rangeland, roadsides and non-crop areas (Figure 1). Some parts of this site work best with JavaScript enabled. It was first recorded in the United States in 1852 at Harrisburg, PA. Dimensions average 1.5-4.0 cm (0.5-1.5 in) wide, and 5-12 cm (2-5 in) long. thistle and non-native plumeless thistle (Carduus acanthoides [L.]). Carduus nutans is an invasive species in various regions around the world, including in disturbed and agricultural settings, and in natural habitats. During the bolting stage plants form multi-branched stems to a height of 1.8 m (6 ft) The number of seed heads per plant is site dependent ranging from 241-561 on favorable sites to 1-18 heads There are numerous chemical treatment options available to manage Musk thistle. Spreading by seed only and producing 8,400 seeds per plant with plumeless thistle to 20,000 seeds per plant from musk thistle. The thistle is also the emblem of Encyclopædia Britannica, which originated in Edinburgh, Scotland. Musk thistle can have different stages of floral development and senescence. It spreads rapidly in disturbed The larvae of the head weevil feed on the seed in the flower head and interfere with seed production and viability. Spring or fall applications, especially in the rosette stage, prior to bolting are best. Vegetables + Lamb's Lettuce. It reproduces/spreads from seed. The head weevil can attack other thistles, including native species. Infestations of this weed can occur very rapidly. A pleasant taste, it is eaten like asparagus. Musk thistle was introduced from Eurasia in about 1853. A native of western Europe, musk thistle was introduced into the eastern UnitedStates in the early 1900s. many states. Goldfinches are quite fond of Nodding Thistle (and all other thistles) for both the seed and the silks from the seed heads, which they use to line their nests. States such as New Jersey, Pennsylvania, and New York were some of the affected regions. Several different management options will need to be utilized to manage this weed. (aka nodding thistle) is a native of Europe. present in forty states. It can invade healthy, undisturbed sites as well, out-competing desirable forbs and grasses in pastures and rangeland and reducing biodiversity. 1. Bull thistle has prominent, sharp spines on each of the leaves narrow, pointed lobes. Tank mixes of several of these compounds may provide better control. Cutting the root below the ground level will be effective. Musk thistle is a non-native biennial forb but can behave occasionally as an … Resources. Hull, A. C., Jr.; Evans, J. O. Musk thistle (Carduus nutans) an undesirable range plant. Etymology. Currently, musk thistle is present in forty states. Pratia. Trees-Acacia. (Thistles) are more plumose (feathery) from longer lateral hairs. Knowing about Musk Thistle and Cherokee Rose life span is important as life cycles vary. Two weevils have been introduced as a biological control for musk thistle: thistle head feeding weevil (Rhinocyllus conicus Froelich) and the rosette weevil (Trichosirocalus horridus Panzer). Southeast Exotic Pest Plant Council Invasive Plant Manual. Musk thistle is an aggressive biennial plant with large, showy pink flowers on long multi-branched stems. 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