BULL THISTLE. Figure 2C. Includes description of weed and its life cycle, history of infestation in the U.S. and West, and sources of more information. Most invasive thistles came from Europe in the 1600s. Bull thistle is a biennial thistle native to Europe. Bull Thistle. Bull thistle colonizes primarily in disturbed areas such as pastures, roadsides, and ditch banks as well as in hayfields, disturbed prairies and logged mountain areas. Bull Thistle More photo galleries ... Get news from the Invasive Species Council of BC delivered to your inbox. Bull Thistle is on the noxious weed list for Minnesota and is one of the spiniest thistles. Not common in MO. It prefers bright sunlight, but can live in a variety of conditions. It occurs in all 48 contiguous states and most of Canada, but is designated noxious in only four states. Invasive Weeds in Forestland: Bull Thistle. It forms occasional side stems, but remains erect in stature, reaching 3-6' in height. Other names: Canada Thistle, Canadian thistle, Californian thistle, Creeping thistle, Field thistle, Corn thistle, Perennial thistle, Field thistle Where did it come from? The bulk of seed is produced on the upper branches, and germination may run as high as 95%. How Does it Reproduce? It is capable of invading fields, pastures, wastelands and along roadsides, but will not survive in cultivated fields. Bull, musk, plumeless, and Scotch thistles are annual and biennial nonnative plants in the sunflower family that are considered invasive. Plumeless and Scotch thistles are listed as noxious weeds in both Arizona and New Mexico. Bull thistle occurs throughout Lassen Volcanic NP, predominately under 7,000 ft elevation in yellow pine forests, lodgepole pine forests, mixed conifer forests, meadows, and willow thickets. It can be a ruderal or first to colonize bare land disturbed naturally, or by agriculture and development. Like Canadian thistle, the most worrying aspect are the seeds, which can disperse within 7 to 10 days of flowering. Bull Thistle’s Role in Healthy Soil Building. REPORT A SIGHTING . We send "General interest" updates monthly and all other updates from time to time. (7.6-30.5 cm) long, lance-shaped and very hairy. Status in Squamish: Status in Whistler: Status in Pemberton: Bull thistle. Thistle was once a revered plant and flower. However, bull thistle mostly grows where soil has been disturbed, either … Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org. Bull thistle is common in disturbed areas but is not a significant threat to well established native ecosystems. Bull Thistle is native to Europe, Northern Africa, and Asia and found on every continent except for Antarctica. It is also naturalised in North America, Africa, and Australia and is an invasive weed in some areas. I collected ... Pollinators get nectar and pollen, but it is aggressively invasive. Discover (and save!) ), bumblebees (Bombus spp. Bull thistle, like many invasive species, mainly inhabits disturbed areas such as roadsides, logged areas, pastures, and riverbanks. Twitter Facebook. Common/Bull Thistle. Midwest Invasive Species Information Network (MISIN) Educational Module and Assessment. Bull thistle. Bull thistle (Cirsium vulgare):Common in Clackamas County, moderately invasive, see our weed profile Biennial; Stems are leafy, stout, branched, and somewhat woolly; Flower heads are large, rose to purple with many sharp spine-tipped bracts They are distinguished from all other thistles by the covering of short, sharp prickles on the upper, ... Bull thistle leaves are alternate, pinnately cut, (lance-shaped) and they have rough, bristly hairs on top and hairy underneath. Musk thistle and bull thistle have been listed as noxious weeds only in … Bull thistle generally is the least serious of the noxious thistles. Appearance. All three are identified by the bright purple flowering head, each with a different inflorescence. Exotic invasive Bull Thistle (Cirsium vulgare) Long silky hairs on Silver Plume Silver Plume blooms in September Virtually no hairs on Johnson grass SF 2016 (Cirsium discolor) Native Tall Thistle (Cirsium altissimum) Native Carolina Thistle (Cirsium carolinianum) Exotic invasive Canada Thistle (Cirsium arvense) Perennial. Bull Thistle. The spiny, spreading, winged stems are up to 7 ft. (2.1 m) tall. Bull thistle (Cirsium vulgare) (Figure 2) has been present in Oklahoma for more than 40 years and occurs statewide. It germinates in spring or fall as a response to soil moisture and is less sensitive to low water availability than other species of thistle. Leaves are 3-12 in. Cirsium vulgare, the spear thistle, bull thistle, or common thistle, is a species of the Asteraceae genus Cirsium, native throughout most of Europe (north to 66°N, locally 68°N), Western Asia (east to the Yenisei Valley), and northwestern Africa (Atlas Mountains). The three most common invasive thistle species are: Canada thistle, bull thistle, and plumeless thistle. Bull thistle ( Cirsium vulgare ; non-native) has prickly winged stems and leaves have prickly hair above, with white wooly hair below. Management options for bull thistle in forest land: biological, chemical, and mechanical controls, plus grazing. It resembles Plumeless Thistle ( Carduus acanthoides ), also a noxious weed, but its flowers are typically 1 inch across or less, leaves are mostly hairless on the upper surface, and is overall even spinier than Bull Thistle. It rarely reaches infestation levels that justify treatment, probably because the insects that feed on native Circium spp. thistles also feed on bull thistle. Home Invasives Invasive Plants old page Bull Thistle. Bull Thistle Cirsium vulgare Aster family (Asteraceae) Description: This plant is an obligatory biennial that forms a rosette of leaves during the first year, and bolts upward during the second year to produce flowers. Bull thistle needs both soil moisture and excessive sunlight, making it most common on stream and lake margins in burned areas, developed areas such as campgrounds, and road crossings. Cirsium vulgare. A distinguishing characteristic of bull thistle is the leaves (Figure 3A). Although it is intimidating in appearance and can sometimes form large infestations, this thistle is not as challenging to control as many others and is mainly a problem in hay fields and pastures. Bull Thistle is a member of the sunflower family and is native to Europe, Asia and Africa. Figure 2B. Foliage . Populations of bull thistle tend to be short lived, establishing after disturbance, dominating for a few years, and then declining as other vegetation recovers [ 27 , 33 , 41 , 95 , 96 , 155 , 167 ]. Minnesota has many varieties of thistle species, some are native and others are invasive. by Tao Orion. Please click here to see a county level distribution map of bull thistle in Washington. Bull thistles have earned the title of noxious or invasive in many areas. Nowadays, it's considered an invasive weed. Cirsium vulgare Asteraceae/Compositae. ), sweat bees (Agapostemon spp.) Canada thistle (Cirsium arvense; invasive) does not have a winged stem or spines on its stem or flower heads. It grows throughout North America, and is considered an invasive species in pastures and forestland. Cirsium vulgare (Savi) Ten. The plant grows 2 to 6 feet tall. Ontario Weed Gallery: Bull Thistle Ontario Vegetation Management Association Weed Control Act - R.R.O. Bull thistle, Cirsium vulgare (Savi) Tenore, is an invasive thistle from Eurasia, found throughout the United States and in Canada from Newfoundland to British Columbia. The first year rosette is dark green and covered in spines. In Australia bull thistle populations persisted for 4 years in grazed pasture but declined in ungrazed pasture, suggesting that grazing allowed bull thistle populations to thrive . It is thought to have been introduced accidentally during colonial times. Invasive Weeds in Forest Land Bull Thistle Cirsium vulgare EC 1588-E • September 2008 B ull thistle is native to Europe, western Asia, and North Africa. Figure 2A. Bull Thistle is a biennial plant, meaning it lives for two years, produces seeds and then dies. Although it is considered an invasive species and weed, the Bull thistle still contributes beneficial ecosystem services such as serving as nectar sources for pollinators such as honey bees (Apis spp. The exact means of introduction are largely unknown, but it is speculated that they were brought over in farm seeds. Although bull thistle does not generally invade undisturbed areas, it can … With its vivid purple flowers and prickly leaves, each type of thistle shares similar characteristics but also has unique identifiers. Jun 22, 2019 - This Pin was discovered by Alexis Woods. Bull thistle reproduces by seed and not by vegetative means. It is now the most widespread of the thistles in the United States (Figure 3, 1990, Reg. If not kept under control, thistle will quickly take over a landscape. It probably was introduced in eastern North America during colonial times, as a contaminant in seed or ship ballast. and butterflies such as the monarch, tiger swallowtail, skippers, among others). Like most invasive plants, Canada thistle, bull thistle, and European swamp thistle (see below) threaten to replace native plants in high quality natural areas, which in turn reduces critical food resources for birds, butterflies, and other wild creatures. 1096 your own Pins on Pinterest Cirsium vulgare is an annual or biennial, herbaceous plant that invades disturbed areas throughout the United States. Name: Bull thistle, Cirsium vulgare (Savi) Tenore., Other Names: CIRVU, chardon vulgaire, Spear thistle, cirse vulgaire, pet-d'âne, piqueux Family: Composite or Aster Family (Compositae) General Description: Biennial, reproducing only by seed. Caleb Slemmons, University of Maine, Bugwood.org. 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