• Bull thistle is a biennial thistle native to Europe. (naaiatelier-elena.nl)
  • Cirsium vulgare (bull thistle, common thistle, or spear thistle) is listed as a noxious weed in nine US states. (wikipedia.org)
  • One of the worst invasive pests here is Cirsium vulgare or Bull Thistle. (nargs.org)
  • Extensions from the leaf base down the stem, called wings, can be lacking (Cirsium arvense), conspicuous (Cirsium vulgare), or inconspicuous. (wikipedia.org)
  • Cirsium vulgare, for instance, ranked in the top 10 for nectar production in a UK plants survey conducted by the AgriLand project which is supported by the UK Insect Pollinators Initiative. (wikipedia.org)
  • Cirsium vulgare was also a top producer of nectar sugar in another study in Britain, ranked third with a production per floral unit of (2323 ± 418μg). (wikipedia.org)
  • Certain species of Cirsium, like Cirsium monspessulanum, Cirsium pyrenaicum and Cirsium vulgare, have been traditionally used as food in rural areas of southern Europe. (wikipedia.org)
  • Two species, Cirsium arvense and C. vulgare are non-native and considered weedy. (ncsu.edu)
  • These differ from other thistle genera (Carduus, Silybum and Onopordum) in having feathered hairs to their achenes. (wikipedia.org)
  • Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. (wikipedia.org)
  • Thistles are in the Asteraceae (daisy) family and can be biennials or short-lived perennials, natives or non-natives. (ncsu.edu)
  • Download the Invasive Species Council of BC's Factsheet for Canada Thistle here. (naaiatelier-elena.nl)
  • Nebraska Extension Publications has a number of publications on thistle management and other invasive species. (naaiatelier-elena.nl)
  • Invasive Species, 2270 Old Penitentiary Road, Boise, ID, 83712, United States It is a non-native invasive species from Europe, and landowners with Canada thistle on their property are obligated to take measures to control it. (naaiatelier-elena.nl)
  • Cirsium thistles are used as food plants by the larvae of some Lepidoptera species-see list of Lepidoptera that feed on Cirsium. (wikipedia.org)
  • Some other common species are: Cirsium arvense, Cirsium palustre, Cirsium oleraceum. (wikipedia.org)
  • Some prairie and wildflower seed production companies supply bulk seed for native North American thistle species, for wildlife habitat restoration, although availability tends to be low. (wikipedia.org)
  • There are so many species from such a lot of genera that I thought I'd start a board that was more general - Panayoti and others have been rapping on spiny plants on the Cactus discussions and I love pricklies (although Monica doesn't so I have to keep them out of touch with one another) but above all I think thistles of all sorts are the great gems. (nargs.org)
  • Most species produce flowers only in their second summer (and every summer thereafter, for perennial species). (ncsu.edu)
  • Among the worst invasive species that are present at Hidden Springs wetlands are purple loosestrife ( Lythrum salicaria ), mis-named Canada thistle ( Cirsium arvense ), and reed canarygrass ( Phalaris arundinacea ). (boisefrontnature.com)
  • Canada thistle is a designated noxious weed under the Nebraska Department of Agriculture's Noxious Weed Program. (naaiatelier-elena.nl)
  • It … Here is the Canada Thistle, Cirsium arvense, a herbaceous plant that is very thorny and is considered a Noxious Weed. (naaiatelier-elena.nl)
  • As far as I'm aware, the Echinops cultivars sold as perennials are not prone to invasiveness. (nargs.org)
  • Some ecological organizations, such as the Xerces Society, have attempted to raise awareness of the benefits of thistles, to counteract the general agricultural and home garden labeling of thistles as unwanted weeds. (wikipedia.org)
  • Cirsium acarna - soldier thistle Cirsium acaule - stemless thistle, dwarf thistle Cirsium altissimum - roadside thistle, tall thistle Cirsium amblylepis - Mt. Tamalpais thistle Cirsium andersonii - Anderson's thistle, rose thistle Cirsium andrewsii - Franciscan thistle Cirsium arizonicum - Arizona thistle Cirsium arvense - creeping thistle, field thistle, Canada thistle Cirsium arvense var.argenteum Cirsium arvense var. (wikipedia.org)
  • Just did some armchair botanizing to look as a few more of the fantastic sea urchin dwarf thistles, even Centaurea comes to mind. (nargs.org)
  • Native thistles are a great option in a meadow garden or naturalized area when looking for native host plants for the Little Metalmark butterfly or the Painted Lady butterfly. (ncsu.edu)
  • Thistle stem gall fly larvae (Urophora cardui) attack the primary lateral stems. (naaiatelier-elena.nl)
  • Each thistle plant can produce 1,000 up to 1,500 seeds per shoot. (naaiatelier-elena.nl)
  • Thistles are a high-value nectar plant for bees and butterflies, and songbirds eat the seeds and use the tufts of the seeds for their nests. (ncsu.edu)
  • The monarch butterfly (Danaus plexippus), for instance, was highlighted as relying upon thistles such as Tall thistle (Cirsium altissimum) as nectar sources during its migration. (wikipedia.org)
  • Thistles are particularly valued by bumblebees for their high nectar production. (wikipedia.org)
  • The standard English name in its native area is creeping thistle. (naaiatelier-elena.nl)
  • The introduced Canada thistle, Matt pointed out, can choke out all sorts of native vegetation as well as native thistles. (naaiatelier-elena.nl)
  • Unlike the many native thistles found in Oregon, Canada thistle can quickly overrun an area and displace native plants, reduce agricultural yield, and create problems for … Once Canada thistle has invaded, it is very important to maintain soil fertility and moisture at optimum levels to favor crop or pasture plant establishment and growth. (naaiatelier-elena.nl)
  • Its name comes from the Greek kersion which means thistle. (ncsu.edu)
  • Canada thistly is a common weed in agricultural areas and is known to reduce crop yields and forage plants for grazers. (naaiatelier-elena.nl)
  • Due to its perennial nature, entire plants must be killed in order to prevent re-growth from rootstock. (naaiatelier-elena.nl)
  • Thistles vary greatly in their size and the color of the flowers. (ncsu.edu)
  • Large patches of purple-flowered Canada thistle ( Cirsium arvense ) grow at the edge of the marsh, interspersed with tall stalks of poison-hemlock ( Conium maculatum ) covered with small white flowers. (boisefrontnature.com)
  • Thistles are known for their effusive flower heads, usually purple, rose or pink, also yellow or white. (wikipedia.org)
  • It targets specific weed problems like Canada thistle, musk thistle, and giant ragweed. (storycountyiowa.gov)
  • Some thistles prefer sunny, open areas and some can tolerate some shade. (ncsu.edu)
  • Cirsium acarna - soldier thistle Cirsium acaule - stemless thistle, dwarf thistle Cirsium altissimum - roadside thistle, tall thistle Cirsium amblylepis - Mt. Tamalpais thistle Cirsium andersonii - Anderson's thistle, rose thistle Cirsium andrewsii - Franciscan thistle Cirsium arizonicum - Arizona thistle Cirsium arvense - creeping thistle, field thistle, Canada thistle Cirsium arvense var.argenteum Cirsium arvense var. (wikipedia.org)
  • This modest-sized perennial knapweed is very similar to Centaurea diluta - North African knapweed and reminiscent of the more well-distributed, but smaller, Acroptilon repens - Russian knapweed. (cnps.org)
  • Some ecological organizations, such as the Xerces Society, have attempted to raise awareness of the benefits of thistles, to counteract the general agricultural and home garden labeling of thistles as unwanted weeds. (wikipedia.org)
  • The following notes are based on the general needs of the genus. (pfaf.org)
  • A perennial, it forms dense colonies, which can spread vegetatively as well as from seed. (cnps.org)