Article: spear thistle facts
December 22, 2020 | Uncategorized
Most posts contain affiliate links. What all these species have in common are those painfully spiny leaves and large heads of purple (or more … The feature that really distinguishes Spear Thistle is its showy purple flowers surrounded by greenish spine tipped bracts. 28 Feb 2017 12:00 am. The leaves are stoutly spined, grey-green, deeply lobed; the basal leaves up to 15–25 cm long, with smaller leaves on the upper part of the flower stem; the leaf lobes are spear-shaped (from which the English name derives). An equine nutritionist responds about the risks. Citation: Ten., Fl. 5:209 (1835-36). Napolit. Considered noxious under the BC Weed Control Act , Canada thistle is commonly found on roadsides, cultivated fields, pastures, logged forests, riverbanks, and other disturbed areas. Common name(s): Bull thistle, spear thistle Scientific name: Cirsium vulgare Family: Sunflower or Aster family (Asteraceae) Reasons for concern: This aggressive and persistent species can quickly take over both disturbed and unattended areas, and outcompete native species, reducing plant diversity and wildlife habitat. I accept that the fact that ammunition was not found in the house does not mean that Mr. McCloskey didn't in fact have full magazines available at the time he confronted the mob. Authorisation Holder: Dow AgroSciences Limited, CPC2 Capital Park, … [11], It is a tall biennial or short-lived monocarpic thistle, forming a rosette of leaves and a taproot up to 70 cm long in the first year, and a flowering stem 1–1.5 m tall in the second (rarely third or fourth) year. Read more about this in the. According to O’Donovan Spear Thistle only spreads by seed. The seeds are dispersed by wind, mud, water, and possibly also by ants; they do not show significant long-term dor… Spear thistle is a robust biennial or short-lived monocarpic perennial that can be a serious problem in grassland and waste and cultivated ground throughout the UK. [13] Nitrogen-rich soils help increase its proliferation. Pest control. For Control of Creeping Thistle and Spear Thistle in Established Grassland Use plant protection products safely. It flowers between July and September, producing sweet smelling purple flowers on top of a spiky stalk, the flowers being very attractive to bumble bees. [15] The seeds are eaten by goldfinches, linnets and greenfinches. Bull Thistle, Spear Thistle Cirsium vulgare is Naturalized to Texas and other States, and is considered an Invasive plant in Texas. The Spear Thistle has flower heads with bright pink florets (tiny flowers) and a ball of spiny bracts (leaf-like structures) that appear from July to October. It is frequent on unsown set-aside land and seems to have increased since the 1960s. One of the easy-to-spot botanical differences between thistles and their numerous relatives in the daisy family, is that the overlapping bracts (involucre) found directly below the flowers of thistles, are always spiny. The flowers are a rich nectar source used by numerous pollinating insects, including honey bees, wool-carder bees, and many butterflies. It is best cleared from land by hoeing and deep cutting of the taproot before seeds mature; regular cultivation also prevents its establishment. thistle has been identified in Oregon only since 1987, purple/Iberian starthistle since 1993. Many folks can recognize the spiny thistle plants of summer field and roadside. Towns and … Cirsium flodmanii - Flodman Thistle, Flodman's Thistle Cirsium foliosum - Drummond's Thistle, Elk Thistle, Leafy Thistle, Meadow Thistle Cirsium fontinale - Fountain Thistle Spear thistle, (sometimes referred to as 'scotch thistle'), is an annual (living for one year) or biennial (living two years) herb, growing to 60 to 120 cm, and occasionally to 1.5 metres. 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. On my daily walks to the local marshy stream by a large meadow, a cluster of Bull thistles has recently burst into brilliant purple-pink flower. Thickets of thistle crowd out forage grasses in pastures and rangelands, reducing crop yields and productivity. Your efforts to remove the thistle from pastures are well worth your time, but complete eradication is difficult, especially with stressed pasture like you describe. The flowerheads are 2 … The prickles often all over the plant – on the stem and flat parts of leaves. In its first year, it appears as a basal rosette of easily-broken, bristly, irregularly- 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). Spear Thistle (Cirsium vulgare) Spear Thistle also has spiny winged stems but grow taller (to 2m). It produces seeds eaten by the American goldfinch, down from seed pods that is used by those birds for nesting material, and serves as a host plant for the Painted lady butterfly. Spear thistle (Cirsium vulgare) buds, Dorset, England, UK, July. Positive: On Apr 6, 2006, Vasyr from Valrico, FL (Zone 9a) wrote: Sure, this plant is quite thorny and pops up everywhere (very quickly, I might add.) But thistle is an easy to identify genus and an easy to find plant. Spear thistles are not used as weapons… but can hurt! The seeds are eaten by goldfinches, linnets and greenfinches. It is the user's responsibility to check that registration or an off-label permit covers the proposed use. (2007). Other genera known as thistles include Carduus, Cynara, Onopordon, and Silybum. 01555067. Spear thistle is a tall biannual species, the flowering stem typically grows to 30cm – 1m in height usually in the second year. Spear thistle is often a ruderal species, colonising bare disturbed ground, but also persists well on heavily grazed land as it is unpalatable to most grazing animals. Its leaves are grey-green and spiny, and its tall stems are winged, spiny and cottony. Spear thistle’s form of defence is the most aggressive in Finland: strong, needle-sharp spines on both the leaf-blade margins and along the winged stem, the capitula’s involucral bracts end with a sting and even the surface of the leaves is covered in delicate spines. They are mostly native to Eurasia and northern Africa. It is also naturalised in North America, Africa, and Australia and is an invasive weed in some areas. Spear thistle plants have been used medicinally and parts of the plant can be made into paper. Spear thistle. Conservatoire et Jardin botaniques & South African National Biodiversity Institute, African Plant Database, "Which flowers are the best source of nectar? [2][12][13], Spear thistle is often a ruderal species, colonising bare disturbed ground, but also persists well on heavily grazed land as it is unpalatable to most grazing animals. Leaves are deeply divided with lobes terminating in a sharp spine. Synonymy: Carduus vulgaris Savi, Fl. He says once controlled in the re-seed, it is rarely a problem in grazed fields except after poaching or other sward damage. Your email address will not be published. The monarch butterfly and other larger-sized butterflies can feed easily from the flowers due to their large size. Spear thistles flower during spring to autumn, but only in their second year of growth. Flora of North America, Bull or common or spear thistle, gros chardon, chardon vulgaire ou lancéolé, piqueux. It grows in waste places, by roadsides, in pastures and cultivated ground, and is generally distributed over the whole kingdom. The leaves are toothed or lobed with spines at the tips of the teeth or lobes. Identifying thistles. 5:209 (1835-36). Spear thistles are classified as a noxious and an environmental weed in some countries, and is a particular problem in Australia, parts of the United States and the United Kingdom. Spear thistles grow to be 1 to 1.5 metres (3.3 to 5 feet) in height, with flower stems at the end of the branches, and look similar to the well known Scotch thistle or cotton thistle, although they are a different species of plant and have the scientific name Onopordum acanthium. [citation needed], Species of flowering plant in the daisy family Asteraceae. Spear thistle has large, deeply-lobed leaves with large spines at the margins, as well as hairy, spiny stems. [10] Marsh thistle, Cirsium palustre, was ranked in first place while this thistle was ranked in sixth place. 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 plant is a biennial, the stem 1 to 5 feet high, stout and strong, more or less woolly with … It sometimes will function as an annual, flowering in the first year. Some species in particular are cultivated in gardens and wildflower plantings for their aesthetic value and/or to support pollinators such as butterflies. It can form huge monocultures and is very difficult to eradicate. Are 5 mm long, with a downy pappus, which assists in wind dispersal include. And greenfinches really distinguishes spear thistle is extremely spiny and very robust are confused with thistles well. Although many species have been naturalized outside their native ranges ) under the UVIMA Project thistles have... Upper surface of the plant can be eaten raw or cooked, but they are from flowers. Introduced throughout North America, Africa, and its tall stems are winged, spiny.. Institute, African plant Database, `` which flowers are the best source of nectar Rinse Containers Invert! 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