Bull thistle is a Class C Noxious Weed in Washington, first listed in 1988. Additionally, while bull thistle flowerheads and leaves can be woolly, the Scotch thistle is more pronouncedly woolly-hairy and the whole plant is rather silvery as compared with the greener bull thistle." The underside of bull thistle leaves are similar in color to the top, this is a key trait to differentiate from field and tall thistle, two native thistle species in Iowa. Foliage Leaves are 3-12 in. Flowers. To eat thistle leaves, all the spines need to be removed. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, flies, Lepidoptera (Moths & Butterflies), beetles. To my knowledge, bull thistle is not available on the herb market, necessitating that it be wildcrafted. Thistle Leaves. Lobes on leaves are tipped with stout spines. Nectar from the flower is eaten by bees, butterflies, and the ruby-throated hummingbird. Bull thistle rosette leaves are green, hairy, 10-40 cm long, lobed and toothed, elliptical to lanceolate with prickles. The flowering stems elongate and flower in the second year. Here the collection of basal leaves from the rosette provides a greater amount of fleshy material in a shorter amount Purple disk flowers of the Bull thistle plant are surrounded by rows of spine tipped phyllaries with one bractlike leaf below. Bull thistle leaves … �����j�2�d�8�����ۧ�*&�gj� The plant grows 2 to 6 feet tall. Mowing can be effective, but make sure the plants do not flower. During the second year, stems grow 1 to 6 feet tall, often with many spreading branches. 7}(E݄�|W�~0lY�bbO'��jX • Roots can be dried and stored for later use. Flowers appear from June to October with 1 to 5 heads per branch. Stems are leafy, stout, branched, and somewhat woolly 4. This is best done by steeping the plant’s fresh leaves in enough 100-proof vodka to cover for two to three weeks. Bull thistle leaves are alternate, pinnately cut, (lance-shaped) and they have rough, bristly hairs on top and hairy underneath. Non-Native Invasive Plants of Arlington County, Virginia, Non-Native Invasive Plants of the City of Alexandria, Virginia, Pacific Northwest Exotic Pest Plant Council, 1998, West Virginia Native Plant Society, Flora West Virginia Project, and West Virginia Curatorial Database System, September 3, 1999, The University of Georgia - Center for Invasive Species and Ecosystem Health, National Association of Exotic Pest Plant Councils. ��A=K�7*;Mң.��U�7�';�*��}�I�� r��}�8�}�����ޏ������}��]uVEc�.���]v[�3H.bsӁѡ��$}�+0�]HI��5w��rm/k�T��nto�o�|�Gj�(m� In the interest of science, I found a bull thistle leaf, peeled it and ate it on the spot. Website developed by The University of Georgia - Center for Invasive Species and Ecosystem Health and the National Park Servicein cooperation with the Invasive Plant Atlas of New England, Invasive Plant Control, Inc., USDA Forest Service,USDA NRCS PLANTS Database, Lady Bird Johnson Wildflower Center, National Association of Exotic Pest Plant Councils,Plant Conservation Alliance, and Biota of North America Program. 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 … It has a taste somewhat like a Jerusalem artichoke, but not as nice. Lobes on the leaves are tipped … Hand-pull and dispose of flowering plants in trash to prevent seed spread. Its numerous prickly spines make this weed an unwelcome guest in lawns. Biological Control of Invasive Plants in the Eastern United States, Colonial National Historical Park (Virginia), Craters of the Moon National Monument (Idaho), Great Smoky Mountains National Park (North Carolina & Tennessee), Harpers Ferry National Historical Park (West Virginia), Manassas National Battlefield Park (Virginia), Minute Man National Historical Park (Massachusetts), Monocacy National Battlefield Park (Maryland), Sequoia and Kings Canyon National Parks (Californina), Alaska Exotic Plant Information Clearinghouse, City of Ann Arbor Michigan Parks and Recreation. There are prickly hairs on the upper and lower surface of the bull thistle leaves. (7.6-30.5 cm) long, lance-shaped and very hairy. The foliage of bull thistle has stiff hairs on top and a woolly appearance on the bottom; while Canada thistle is smooth on top and either smooth or hairy on the underside. The leaves of a bull thistle are large, woody and are flatted and basal rosette during their first year of growth. This weed is often confused with Musk Thistle (Carduus nutans), but the leaves of mature musk thistle plants usually lack hairs. Bull thistle flower heads are purple and measure 3.5 to 5 cm in diameter, 2.5 to 5 cm long and are usually... Leaves. Its leaves and stems are dark bluish-green and covered with very sharp thorns. Wheeler’s thistle plants are shorter and smaller with more delicate stems and rosettes. Because control is not required in the county, it is on the list of Non-Regulated Noxious Weeds for King County. Invasive Plant Control in Maryland. It occurs in all 48 contiguous states and most of Canada, but is designated noxious in only four states. Mature leaves have large, pointed lobes with sharp spines projecting from the lobe tips. This gall fly’s larvae induce and feed on gall tissue in the developing bull thistle seedhead, reducing seed production up to 60%. Thistle was once a revered plant and flower. This map identifies those states that list this species on their invasive species list or law. If you see milk thistle, please contact the King County Noxious Weed Control Program. Bull thistle … 1. Cirsium vulgare Distinguishing Features. 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 … 102pp. Bull thistle flowerheads are 1.5 to 2 inches (3.8 to 5 cm) in diameter, 1 to 2 inches (2.5-5 cm) long, usually solitary, and more or less clustered at the ends of shoots and branches. • Root is best when mixed with other vegetables. For more information, see Noxious Weed Lists and Laws or visit the website of the Washington State Noxious Weed Contr… It was introduced from Europe and has naturalized in most of North America. Leaves. kingcounty.gov… It forms occasional side stems, but remains erect in stature, reaching 3-6' in height. It is a prickly biennial that grows freely in disturbed soils, pastures, ditches, roadsides and unmanaged spaces. The stem or stalk can grow up to 7 feet tall, but most of the one's I see are around 3 or 4 feet. Additionally, Canada Thistle (Cirsium arvense) is a perennial from rhizomes, and young plants do not develop as a rosette, unlike bull thistle. Nowadays, it's considered an invasive weed. Bull thistle control can be manual or chemical with an emphasis on seed co… Overview Information Blessed thistle is a plant. Life cycle . C��7�/�P�εᡯ*����E^ ���e��itLXv���㼮n�5P It has spiney leaves. … Bull thistle. Mature leaves have large, pointed lobes with … These bristles are sensitive to wind and allow for wide dispersal of the bull thistle fruit. Bull thistle has dark green leaves with deep lobes; the upper side of the leaves have coarse hairs, while the underside has soft white hairs. leaf edges and stems. �+�sɶ�ݘz(��Ё�fH*�]{U�:� ��@ ��� Bull thistle basal rosette, the first several leaves are not as deeply lobed as leaves that develop later. All biennial thistles considered noxious are native to Europe or Eurasia, and were introduced into North America as seed contaminants. Bull thistle reproduces only from seeds which germinate in the spring. Bull thistle blooms from June to October. Flower heads of bull thistle are smaller than musk thistle. Wisconsin manual of control recommendations for ecologically invasive plants. Leaves are woolly on the underside 7. Erect, spiny biennial. Leaves are hairy and the upper leaf surface is rough. In The Forager’s Harvest, Samuel Thayer goes into some detail about how thistles were one of the first wild foods he foraged, and how he harvests the center spine of the leaves by peeling off the surrounding spiny leaf material, leaving a stalk like a celery stick. Questions and/or comments to the Bugwood Webmaster Hoffman, R. & K. Kearns, Eds. Bull thistle rosettes remain green and continue growing throughout the winter. @��. 1. • Young flowers are cooked and used as a vegetable. Comments: Bull thistle is an aggressive weed officially listed as a noxious weed in Kansas. Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007. Bull thistle overwinters in this stage. Bull Thistle is a deep-rooted biennial. Take a look at those spikes, most of them are about 1 cm long and surprisingly rigid. This thistle doesn't have the milky striping, and its leaves are hairier than Italian or milk thistle. Seedling: Cotyledons of the bull thistle are oval-shaped, being broadest at the apex. Madison, Wisconsin. Bull thistle (Cirsium vulgare) has lobed leaves with sword-shaped sections, and scary spines at the tips. Last updated October 2018    /    Privacy, Loke T. Kok, Virginia Polytechnic Institute and State University, Bugwood.org, Dave Powell, USDA Forest Service (retired), Bugwood.org, Michael Shephard, USDA Forest Service, Bugwood.org, Britt Slattery, US Fish and Wildlife Service, Bugwood.org, Dan Tenaglia, Missouriplants.com, Bugwood.org, Steve Dewey, Utah State University, Bugwood.org, Forest and Kim Starr, Starr Environmental, Bugwood.org, USDA NRCS PLANTS Database , USDA NRCS PLANTS Database, Bugwood.org, Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org, This map is incomplete and is based only on current site and county level Prevalent in the United States and Canada, bull thistle is invasive and difficult to manage. All of the leaves are deeply lobed with a 1 cm hard and sharp spike coming out the tip of each lobe with the margins lined with smaller spikes. Leaves. Leaves are irregularly lobed, with the end lobe being longer than the side lobes, and all tipped with yellow prickles 6. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Bull Thistle. Leaves. Cirsium vulgare is a BIENNIAL growing to 2 m (6ft 7in) at a fast rate. 98 0 obj <>stream He describes them and being tender, juicy and delicious. The spiny, spreading, winged stems are up to 7 ft. (2.1 m) tall. The fresh flowers were chewed to cover up the taste of medicines and the achene bristles were used as the tail for blow darts. I was underwhelmed. 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. The most commonly found is Wheeler’s thistle (Cirsium wheeleri) which also has purple flowers. The plants die after flowering or after the first frost. Bull thistle – Cirsium vulgare. The stems do not have spiny wings and therefore can be easily touched. Leaves are coarsely lobed with each lobe having a spine at its tip. Biennial 3. Seeds are eaten by small … Leaves alternate and are deeply lobed with coarse hair on the leaf tops and fine wooly hair on the underside. The leaves are one of its primary means of identification. The dark green leaves are up to 12 in (31 cm) long, rough-textured, hairy, and bear long spines on their margins. It is noted for attracting wildlife. Bull thistle (Cirsium vulgare) is a biennial, herbaceous, taprooted plant up to 6 ft (1.8 m) tall.Plants often have a single, heavily branched stem armed with spiny wings between the leaves. Bull thistle is a widespread biennial thistle originally from Europe and Asia, but now introduced throughout North America. Erect, spiny biennial. Spines extend downward from the leaves along ridges of the stem. Roots and Shoots (stems, leaves and hairs). Bull thistle is a very dangerous plant. If you see milk thistle, please contact the King County Noxious Weed Control Program. Bull thistle (Cirsium vulgare): 1. Affordable and search from millions of royalty free images, photos and vectors. Leaves can be hairy or woolly, second year stems topped with old style shaving brush shaped flowers like you would see in old western movies barbershops scenes. The early leaves of its young plant are also oval with a spine-like fringe. For more information, visit. The younger flowers, stems, leaves and roots of bull thistle are edible. June 5, 2015 Cirsium vulgare (Savi) Tenore Asteraceae (Aster family). The Bull thistle goes by the latin name Cirsium vulgare (vulgare meaning ‘common’) and was previously known as Cirsium lanceolatum—likely for its highly lanceolate leaves. Bull thistle rosette. Still, if I’m in a pinch, at least I know they are safe to eat. Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994. Bull Thistle is a biennial that forms a rosette of leaves the first year and sends up a flowering stem the second year. Public and private landowners are not required to control infestations of bull thistle that occur on their property in King County. Biennial thistles, such as musk (Carduus nutans L.), plumeless (Carduus acanthoides L.) and bull thistle [Cirsium vulgare (Savi) Tenore], are not as difficult to control as the perennial thistle species, but spread rapidly and can become severe problems in some areas. Leaves are 3-12 in. People use the flowering tops, leaves, and upper stems to make medicine. Bull Thistle Cirsium vulgare. Bull thistle rosette. (7.6-30.5 cm) long, lance-shaped and very hairy. reports made by experts and records obtained from USDA Plants Database. Newly emerged leaves are egg-shaped and have spines along the edge. The leaves of a bull thistle are large, woody and are flatted and basal rosette during their firs… This weed is found throughout the United States. The rosette leaves ranging between 3 to 7 inches long. Roots are bland tasting some what like a mix of celery and Jerusalem Artichoke. The second true leaf is dark green and covered … Bull thistle is not native to North America and is believed to have been introduced from Europe in colonial times. Natural Resources, Bureau of Endangered Resources. If cut too early before flowering, plants may re-sprout and flower again that season. The leaves can grow from 7.5 to 30 cm long. It has spiny-winged stems, and its flowers are classic onion-shaped thistle … However, it is distinguished from other thistles by its white marbled leaves; it also only has one large purple flower per stem. The plant has colonized much of North America and is a pest plant in the garden and in agriculture. Cirsium vulgare (Savi) Tenore. %PDF-1.6 %���� Asteraceae (Aster family) Life cycle. Appearance Cirsium vulgare is an annual or biennial, herbaceous plant that invades disturbed areas throughout the United States. Bull thistle stem leaves are more or less lance-shaped and 3 to 12 inches (7.6-30 cm) long, prickly hairy on the top and very hairy underneath. The plant is self-fertile. endstream endobj 99 0 obj <>stream The bull thistle produces … thistles by its white marbled leaves; it also only has one large purple flower per stem. Leaves point upward, with the top leaves extending above the flower head; Leaves are shallowly lobed, have somewhat weak spines, and are woolly on the underside (sometimes slightly woolly on the top) Plant grows up to 7 feet tall; Edible thistle (Cirsium edule): Biennial or short-lived perennial The sharp spines that cover virtually every surface of the stem, leaves and flower head can easily puncture and irritate skin. As a biennial, bull thistle has a two‐year life cycle. It is hardy to zone (UK) 2 and is not frost tender. kingcounty.gov/weeds ~ 206-477-WEED (206-477-9333) or TTY: 711 ~ noxious.weeds@kingcounty.gov Revised February 2008 4 pp. Also known as the Spear thistle (for obvious reasons), the genus Cirsium … May 6, 2017 By Laurie Neverman 4 Comments This post may contain affiliate links which won’t change your price but … The roots were also used to treat stomach cramps and were eaten as a food source. 2003. On smaller plants, the whole stem and branches are spiny-winged. First-year leaves originate from a basal rosette, followed by an erect, branched, flowering stem in the second year. Urophora stylat… Remove stems from site if plants are cut or pulled with flowers. Bull thistle leaves are eaten by the white-tailed deer and eastern cottontails. Around here it’s not too hard to find a thistle plant, and our main variety is common Bull Thistle (Cirsium vulgare). Bull thistle, also known as Cirsium vulgare, is a biennial thistle. "The exotic milk thistle (Silybum marianum) can also be mistaken for the bull thistle… �Q�+�m�*��1U&��a�],��A��)���=�B����H�Q�DS��K���lЊc���9f�b�4��ם��.�FJ��a�|����8�G����'PhU�)Q\��[�c�����.N̳�����V��7��N�j6T��"fE��|C�E!�?m��7(Y?l/�V፵���D� ���n��(/6��3��}�S���VT�SF�&5?���p��e�h�(�mX���Eu�K�[� �����{�y�8⌰K����tקn)�Ջ|��L!��?f�R����F�Q�=Sۅ\��bF�k+��χ\����j��h��K-� ��=�Bu�@@�P���H//Ӣ�2]��KXIp� ��K Kb��Lf���o���_�� G|�%�7Qꇣ�Nj�}ߔP7����2�� v�:Ã��D�T� ���Ly�,���Zpa*�u25O�$`l9�� 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. Leaves . Leaves are very spiny. Seedlings have egg- to spatulashaped cotyledons and oval, oblong to spatula-shaped … Left above: Eastern Bumble Bee (Bombus impatiens) has a black head, a black bald spot on its yellow thorax, and a yellow stripe on its abdomen (8-19-18).Right: Sweat Bees (Halictid sp).Skinny pale stigmas poke up between darker fused anthers that hold pollen.. The leaves that follow are longer with pronounced spiny lobes. The bristles found on the fruit of the bull thistle are appropriately named "thistledown". The flowering stal… ����Ħ��7{o;/�|�ܥ�I���ɩ The mid to upper stems of the bigger plants have narrow, very spiny leaf-like wings that run lengthwise on the plant. Download Bull thistle stock photos. Additionally, while bull thistle flowerheads and leaves can be woolly, the Scotch thistle is more pronouncedly woolly-hairy and the whole plant is rather silvery as compared with the greener bull thistle." The bull thistle is a biennially growing plant. Bull thistles have an erect stem that can grow from 30 to 150 cm tall with wide set branches. First-year leaves originate from a basal rosette, followed by an erect, branched, flowering stem in the second year. The seeds are wind dispersed, and they’re liable to pop up in any corner of … The leaves appear as a rosette the first year - especially when mowed. The root of bull thistle is edible cooked. Dig up bull thistle plants with a shovel, ideally when the plants have formed buds but prior to flowering. Wisconsin Dept. Bull thistle leaves are coarse on top and soft on the bottom. Leaves are … During the first growing season, the plant forms a rosette. Biennial thistles spread only by seed (achenes) that are produced in great number by all the noxious species, ra… Bull thistles are … Home and Garden Information Center, Home and Garden Mimeo HG88. [&���/��|�����\���Q�# ����ԫ�����V"�3���s��GX�L���S������m��W�~��Շ�Gv;��Q>Oc�����M���7���F���F��z(���. Leaves are alternate (come off the stem one at time at each leaf node). Bull thistle seed production is impacted by the seedhead gall fly, Urophora stylata. Next up is the thistle leaves. John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995. Bull thistle basal rosette, the first several leaves are not as deeply lobed as leaves that develop later. It tasted like grass. Bull thistle (Cirsium vulgare) is a plant that is related to the sunflower family but has none of the charm and beauty of those sunny-nodding flower heads. As the stem gets thicker, the wings start drying and disappearing. "The exotic milk thistle (Silybum marianum) can also be mistaken for the bull thistle, however, its range is rather restricted to a few If not kept under control, thistle will quickly take over a landscape. The bull thistle has elongated leaves which are each tipped with a stiff spine. Seedling: Cotyledons of the bull thistle are oval-shaped, being broadest at the apex.The early leaves of its young plant are also oval with a spine-like fringe. The top of the leaves are dark green with many sharp spikes. The stem grows up out of a rosette of these spiney leaves. Bull thistle is a biennial, which means it typically takes two growing seasons to complete its life cycle. Common in Clackamas County, moderately invasive, see our weed profile 2. Flower heads are large, rose to purple with many sharp spine-tipped bracts 5. Bull thistle reproduces only from … With its vivid purple flowers and prickly leaves, each type of thistle shares similar characteristics but also has unique identifiers. Bull Thistle Identification: Herb, two to five feet high, basal and stem leaves lobed, lower stems leaves can be 4 to 9 inches long (10-23 cm). It can invade almost any type of disturbed areas and forms dense thickets that crowd out native plants. Additionally, Canada Thistle (Cirsium arvense) is a perennial from rhizomes, and young plants do not develop as a rosette, unlike bull thistle. People use the flowering tops, leaves, and upper stems to make medicine. BULL THISTLE. 1997. Leaves have noticeable “wings,” (flat projections extending down the stem) 8. 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. Primarily growing in pastures and roadside ditches. It was introduced from Europe and has naturalized in most of North America. This weed is often confused with Musk Thistle (Carduus nutans), but the leaves of mature musk thistle plants usually lack hairs. Overview Information Blessed thistle is a plant. Plants grow vegetatively their first year as rosettes of green, sparsely hairy leaves. They are deeply lobed, each lobe has a spine at its tip. Maryland Cooperative Extension Service. It can … They’re quite thin, so you’d think they’d be weak and flexible, but not exactly. A tea of the leaves was taken for neuralgia. Blessed thistle was commonly used during the … Bull thistle has alternate, lanceolate (lance-shaped) leaves with rough, bristly hairs on top and hairy underneath. First-year leaves originate from a basal rosette, followed by an erect, branched, flowering stem in the second year. A distinguishing characteristic of bull thistle is the leaves (Figure 3A). The leaves are not covered in bristles or bumps like bull thistle. Canada and Bull Thistle – Edible from Bud to Root – Weekly Weeder #3. Bull thistle generally is the least serious of the noxious thistles. A rather bland flavor, the root is best used mixed with other vegetables. The second true leaf is dark green and covered densely with white hairs on the upper surface. 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For later use pastures, ditches, roadsides and unmanaged spaces and stored for later use Center... Of bull thistle, please contact the King County Noxious weed control Program at the apex Weeder # 3 characteristic... Seasons to complete its life cycle flowering or after the first frost was commonly used during first..., followed by an erect, branched, flowering stem the second year leaves coarsely. An erect, branched, and scary spines at the apex toothed, elliptical to lanceolate prickles... Invasive plants occurring on National Park Service lands, 2000-2007 tops, leaves and hairs ) medium ( ). Still, if I ’ m in a pinch, at least I know they are deeply lobed with lobe... During the first frost vegetatively their first year - especially when mowed, branched flowering... Has purple flowers many sharp spikes of a rosette of leaves the first frost and basal rosette during firs…... The County, moderately invasive, see our weed profile 2 puncture and irritate.! And have spines along the edge john Randall, the first several leaves are … leaves prickly biennial forms. Pest plant in the second year vulgare ) bull thistle leaves lobed leaves with sections! Purple with many sharp spine-tipped bracts 5 is Wheeler ’ s thistle plants with a shovel ideally! The early leaves of a bull thistle is a biennial thistle top of the bull thistle shares similar but... Four states 2 m ( 6ft 7in ) at a fast rate re-sprout and flower head can puncture! Noxious thistles butterflies, and were eaten as a Noxious weed control Program market, necessitating it... Spiny wings and therefore can be effective, but now introduced throughout North America fast.. Contact the King County Noxious weed control Program for ecologically invasive plants grows in!, winged stems are dark green with many sharp spikes to manage in pinch. Grows freely in disturbed soils, pastures, ditches, roadsides and unmanaged spaces that lengthwise... The achene bristles were used as the stem ) 8 listed in.... Used as the Spear thistle ( Cirsium vulgare, is a biennial growing to 2 bull thistle leaves 6ft. Come off the stem one at time at each leaf node ) alternate and are flatted and rosette... Very dangerous plant as the Spear thistle ( Cirsium vulgare is a biennial growing to m! Root – Weekly Weeder # 3 • young flowers are cooked and used as the stem followed by erect. Root – Weekly Weeder # 3 interest of science, I found a thistle... Downward from the lobe tips comments: bull thistle is a very plant... ( Aster family ) the spot 5, 2015 Cirsium vulgare ) lobed.