Tansy ragwort identification and control: Jacobaea vulgaris
网页Tansy ragwort (Jacobaea vulgaris), a regulated Class B noxious weed, is a toxic biennial found throughout King County, especially on open, sunny sites such as in pastures and on roadsides. Eating it can sicken or even kill cattle, horses, some goats, pets, and people.
Tansy ragwort - OSU Extension Service
网页Tansy ragwort was unintentionally introduced into Oregon in the early 1920s, and within 30 years, became a regional problem, killing thousands of livestock animals — mostly cattle and horses, and contaminating pastures and hay.
Washington State Noxious Weed Control Board
网页In eastern Washington, the native species tall butterweed (Senecio serra) can look similar to tansy ragwort. Tall butterweed does not have the lobed, ruffled leaves that tansy ragwort has (its leaves have toothed edges) and its flowerheads only have 5 to 8 'petals', not the typical 13 of tansy ragwort.
Who’s Who? Noxious Weeds and their Look-Alikes
网页2017年6月27日 · Tansy ragwort is also easily confused with common tansy (Tanacetum vulgare), a Class C noxious weed in King County. This perennial grows 2-6 feet tall and produces bright yellow flowers at about the same time as tansy ragwort does. But up close, they’re easier to tell apart. Common tansy’s flowers look like buttons and lack ray flowers.
Tansy Ragwort Pictures, Images and Stock Photos
网页Search from 255 Tansy Ragwort stock photos, pictures and royalty-free images from iStock. For the first time, get 1 free month of iStock exclusive photos, illustrations, and more.
Weeds: Tansy ragwort – Senecio jacobaea - Washington State …
网页2024年6月22日 · Photo by: T.W. Miller. Biology. Tansy ragwort is a biennial or short-lived perennial spreading by seeds. In lawns, regular mowing may maintain it in a non-flowering perennial form. First-year rosettes have a cluster of basal leaves. Second-year plants grow upright to two to four feet.
Exotic Species: Tansy Ragwort - U.S. National Park Service
网页Native to Europe and western Asia, tansy ragwort ( Senecio jacobaea) now occurs in portions of the West, Midwest, and Northwest United States. Tansy ragwort was first reported in North America in British Columbia in 1913. Tansy ragwort grows best in cool, moist climates, on light, well-drained soils.
Tansy Ragwort - Pierce County Weed Board
网页Tansy ragwort is a problem in grasslands, disturbed areas, forests, pastures, rangelands, and clear-cuts. Tansy ragwort occurs on many different soil types. Tansy Ragwort contains pyrrolizidine alkaloids which lead to liver failure. This weed is toxic especially to cattle, horses, deer, pigs, and goats.
Senecio jacobaea | Tansy Ragwort | Wildflowers of the Pacific …
网页Originally from Eurasia. Invasive in pastures and fields, very toxic to cattle and horses. Rarity: Common. Flowering Time: All Summer. Life Cycle: Perennial. Height: 2--4 feet. Habitat: Coastal, Meadow, West-Side Forest, Disturbed. Found In: Olympic Np, Mt. Rainier Np, N Cascades Np. Native: No. More Information: Common synonyms: tansy butterweed.
Selected images for tansy ragwort ( Jacobaea vulgaris )
网页Selected images for tansy ragwort (Jacobaea vulgaris ) Appearance Jacobaea vulgaris is a biennial to short lived perennial herb native to Eurasia. Plants can reach 1-4 ft. (0.3-1.2 m) tall. Foliage The leaves of the basal rosette have petioles, cauline (stem) leaves are sessile and both are deeply lobed and alternate.
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