such aphids as Brachycaudus This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Bull thistle is a biennial herbaceous plant. Long, sharp spines on the leaves at the midrib and the tips of the lobes 4. Thistle is the common name of a group of flowering plants characterised by leaves with sharp prickles on the margins, mostly in the family Asteraceae. cardui (Thistle Aphid), Capitophorus Other insects feed Branching, erect biennial, 2 to 6 feet tall 2. reddish brown, terete with several longitudinal ridges, and The American Goldfinch, Clay-colored Sparrow, Pine Siskin, These achenes are distributed by the wind. Globe thistle is cold-hardy in USDA zones 3 to 8. See the glossary for icon descriptions. They have sharp spines especially along the stem. Aster family (Asteraceae). I'm kind of curious about whether it will flower, and I decided to let it grow this year for identification. Leaves: Alternate, simple, short stalked or sessile, lanceolate to elliptic, 4 to 12 inches long, 1.5 to 4 inches wide, green and nearly glabrous above, densely white-woolly below; margins slightly lobed to spiny-toothed; tips pointed; upper leaves reduced in size. Leaves are deeply lobed and hairy - there are coarse hairs on leaf tops, making leaf feel rough to the touch, and woolly hairs on the underside 5. The native Tall Thistle is occasional throughout Illinois (see Distribution more tolerant of shade than other thistles. al. Stems are ridged and covered with crisp, bristly hairs but are not spiny; branching is in the upper portions of mature plants. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U. habitats; it is found in wooded habitats more often than other thistles. The nectar of the flowerheads attracts bumblebees, long-horned bees After the blooming period, the entire away prematurely at a dry sunny site. Also Called: Roadside thistle. This perennial can reach 5 feet tall. To identify it, notice its leaves, which are unlobed (though they may be wavy or have only shallow, broad lobes), are felty-hairy beneath, and have prickles only along the edges. ), Also like dandelions, the wind blows the light seeds so they continue to spread … Range & Habitat: So how do you know which one’s sprouting in your garden? The of the flowerheads become masses of bullet-shaped achenes with tufts of Distaff thistle is a spiny annual growing to 3 1/2 feet tall. (thistles). During the see Clark et al. Thistles can be biennial, short-lived perennial or annual. Identification: Tall thistle is an erect, robust, biennial or short-lived perennial forb that rises on a single stem from a slightly thickened taproot and fibrous roots. ), Painted Lady undersides of the preceding native thistles are bright white because This thistle is 80 to 200 centimeters (about, 31 to 79 inches) tall. Thanks for your understanding. If invasive thistles are not present, use of feed and hay from infested areas should be avoided. midrib; it has a dark tip, where a fine spine projects outward. The group of 5 is wild lettuce, we think. savannas, thickets, swamps, meadows, areas along railroads, and Each floret has a tubular corolla that divides into 5 Undersides of leaves are velvety white with fine hairs, the upper surface with stiffer short hairs. Creeping thistle will grow in all manner of waste-ground, grasslands, verges and field edges. flowerhead has a multitude of small disk florets that are pink to (a treehopper), and ), please check the links and invasive species pages for additional resources. Comment (max 1000 characters): Note: Comments or information about plants outside of Minnesota and neighboring states may not be posted because I’d like to keep the focus of this web site centered on Minnesota. Proper identification of thistles and timely decisions about their control is essential. each leaf is sessile or clasps its stem slightly. Milk thistle has green hairless leaves with white veins. Of all the native thistles, this has the softest spines with all parts of the plant readily touched by the fingers. Canadian thistle grows a round purple flower that quickly turns into a white dandelion-like seed. C. altissumum has not been recorded in Stearns County but C. discolor has. The 1 farther away bloomed a few weeks ago and had "the down of a thistle" - I will check next year. The base of Another noxious thistle, it has large, spiny leaves and flowers, which turn reddish-purple. Your Name: itself. 1st year plants are similar to the alternate leaves, except they are Basal and lower leaves may be deeply lobed or have no lobing, and taper to a winged stalk. palustris (a leaf beetle), Cassida rubiginosa Field Thistle Identification. It produces yellow flowers with red veins borne in spiny heads. tall thistle. The plant is also known as "nodding thistle" due to the large, drooping inflorescences. Is there a way to upload pictures here? Its creeping roots enable it to quickly spread across an area, forming large colonies. The upper stems The central stem and side stems are light green to The Tall Thistle is a native thistle of the tallgrass prairie. Tall thistle is a native thistle that can grow to be 10 feet tall! beetles (Robertson, 1929; Graenicher, 1907). Thistle significantly depending on environmental conditions. The flowers of thistles are typically shades of pink, lavender and purple, sometimes they’re white, and some species have yellow or red flowers. Most of these invasives bloom earlier in May and June. About 200 species are known worldwide from North America, Europe and Asia. The sow-thistles are easily distinguished by the shape of their leaves. The flower heads are light purple and shaped … Smooth Sow-thistle and Common Sow-thistle often hybridise, resulting in plants with slightly prickly leaves. Description Appearance. borealis (Northern Grasshopper), Entylia bactriana Rosettes form in first year, flowering stems the second 3. Its presence on the prairie is celebrated as a sign of a healthy and biodiverse tallgrass prairie ecosystem. Bull thistle is distasteful to most grazing animals, giving the thistle a competitive edge. small floral scale is lanceolate-ovate and dark green with a white There are many other yellow members of the daisy family with flowers similar to those of the Dandelion. During the 2nd year and thereafter, it develops stems with root system consists of a taproot. Tall Thistle is where it occurs. The Location: Cultivation: Wooly thistle. other common thistles, except that its leaves are less pinnatifid and Thistle Plant Identification Each The nectar and pollen of native thistles are incredibly valuable food sources to bees, butterflies, and other pollinators. Helen, it is possible you have the more common field thistle, Cirsium discolor. Tall Thistle (Cirsium altissimum) Later than the normal bloom for the Tall Thistle this late arrival is somewhat stunted. During the 1st year, it consists of a low rosette of leaves spanning about 1' across. Is this the first instance of Tall Thistle in Dakota County?? Herbaceous plants are also known as forbs or wildflowers All of these tall-growing These leaves are Florida Thistle Identification Pictures . Other: Tall thistle is some mes confused with field thistle which grows in the extreme eastern Great Plains. alternate leaves and becomes about 3-8' tall. Creeping Thistle by AnRo0002 / CC0 This plant can typically grow up to 1.5 m (5 ft) height, forming vast clonal colonies from the expanded root system that send up several vertical shoots throughout the growing season. Photos by K. Chayka and Peter M. Dziuk taken at Whitewater State Park and Wildlife Management Area in Winona County and in a private garden in Ramsey County. ), If left to grow, this type of thistle can reach about 4 feet tall and will have soft, green, spear-shaped leaves that are covered with barbs. The undersides of tall and field thistle leaves are hairy and white, with field thistle having leaves more deeply divided by numerous lobes. Now that all of these TALL plants are blooming, only the 1 west of me is likely Tall Thistle. Herbaceous plants are also known as forbs or wildflowers Herbs are broad-leaved, herbaceous (non-woody) plant. resembles Cirsium discolor (Pasture Thistle) and The size of this plant can vary During the 2nd year and thereafter, it develops stems with alternate leaves and becomes about 3-8' tall. The weed milk thistle, its spitting image, is common throughout North America, and both reseed readily. Each Canada thistle(Cirsium arvense) is an introduced pe- rennial thistle that is widely distributed in Nebraska and other northern states. Herbs are broad-leaved, herbaceous (non-woody) plant. The lower leaves may wither As the common name suggests, this thistle can become quite tall. Identification. Unlike the Prickles can also occur all over the plant – on the stem and on the flat parts of the leaves. Above: Misty globe thistles (Echinops ritro) by Isidre Blanc via Wikimedia.The gentler cousin to the Scottish thistle, non-invasive globe thistles (Echinops ritro) are ideal for the garden.With deep blue or violet orbs perched on silvery stems that are from 2 to 4 feet tall, globe thistles provide a striking architectural and textural element to the garden. Think I saw it on field trip with the Native Plant Society on June 26, 2016 in wooded areas of the Quarry Park SNA. The prickly sow-thistle, Sonchus asper, is similar but its leaves are generally greener and with sharper spines. Seeds: A single plant can produce up to 120,000 seeds annually, with seeds remaining viable in the soil up to 5 years. each lobe or dentate tooth, there is usually a spine. Flowering Time: June - September. Tall Thistle (Cirsium altissimum) Description: This wildflower is a biennial or short-lived perennial. protection from hoofed mammalian herbivores. Now that my few thistles are blooming, I see that they do match up with C. discolor. Many insects feed on the leaves, stems, flowers and seeds, while some songbirds also feed on thistle seeds. (Thistle Tortoise Beetle), Euphoria Map of native plant purveyors in the upper midwest. Photographic (Swamp Metalmark) and Vanessa across. they have dense mats of white-woolly hairs. Rosette leaves of musk thistle usually have silvery margins that simplify identification. Bull thistle grows in disturbed areas such as pastures, roadsides and ditches. At the base of these floral bracts surrounding the stalk are several narrow leafy bracts. cardui (Painted Lady), also feed on inda ), and Tall Thistle can be found in both disturbed and undisturbed sparingly branched. common Leaves are alternate, up to 18 inches long and 8 inches wide. Leaf bases extend down onto stems and form spiny wings along the stems 6. You can identify the Scotch thistle, Onopordum acanthium, by its hairy, greyish blue foliage. wildflower is a biennial or short-lived perennial. The blooming period occurs Associations: In Minnesota it has a patchy distribution in the lower two-thirds of the state and is never common. becoming gradually smaller as they ascend the stems. spiny. Pink-magenta flower heads top each stem 7. (2008). Large population, many plants on the order of ten feet tall. Where to find thistles. Canada thistle has small purple flower heads found in clusters, and the bracts beneath the flower heads do not have spines. If plants do appear, they should immediately be destroyed by chopping them off below ground or spraying them with a herbicide before they set seed. destructively on the foliage, sap, and other parts of Cirsium spp. Your email address: (required) Stems have a winged appearance. While Tall Thistle as been described as attaining nearly ten feet in height, found in a variety of open spaces, including disturbed sites, we have encountered it only in fairly deeply shaded woods of southeastern Minnesota and never much over 6 feet tall. At the pointed tip of that are more green because they are less densely hairy. more heavily armed with spines than the Pasture Thistle. Flowers are purple to pink, rarely white, 1 to 2 inches wide. Tall Thistle is a Herb. Tall Thistle and Pasture Thistle, the Bull Thistle has leaf undersides Comments: elaeagni (Artichoke Aphid), and Uroleucon cirsii (Large The root systems explain why; spear thistle has a tap root, whereas creeping thistle grows on rhizomes. Musk thistle often grows in excess of 6 feet tall, has very large flowers that tend to droop, and the flower has very characteristic brown bracts that resemble a pine cone. roadsides. Web design and content copyright © 2006-2020 MinnesotaWildflowers.info. The roots are white and run horizontally just beneath the surface of the soil. Help support this site ~ Information for sponsor opportunities. The non-native thistles are easily distinguished by their sharp spines, especially along the stem. Bull thistle has prominent, sharp spines on each of the leaves narrow, pointed lobes. Leaves: Very spiny stems and leaves. Bull thistle is a biennial plant that can grow up to six feet tall. Its stalks are smooth, green, branched, and mostly lack spikes. Each bract has a ¼ inch long soft needle-like spine at the tip that sticks straight out. aggressive Eurasian species, Cirsium vulgare (Bull Reminds me of a thistle, but it doesn't really have that many barbs, and the ones that it has don't prick my finger when I touch them. Thistles have all disc flowers that are shaped into long tubes. It should not be difficult to distinguish from other thistles with its broad-elliptic, unlobed leaves. The tall thistle’s leaves are green and mostly hairless on the upper surfaces, with white fuzz on the lower surfaces. flowerheads are pink to purplish pink. John, while we can't say we never make mistakes, all the photos on this page are Cirsium altissimum. The Creeping thistle is our most common species of thistle and can be found on disturbed and cultivated ground, such as rough grassland, roadside verges and field edges from June to October. entire, slightly dentate, or shallowly lobed. An The alternate leaves are up to 9" long and 3" across, It is four feet tall with a one inch flower as compared to the August and September blooming Tall Thistle which are commonly six or more feet tall with two inch flowers. slender lobes. The Tall Thistle (Cirsium altissimum)ranges from 4-5 feet in height with dark to light purple flower heads. Along a woodland path at Fox Ridge State Park in east-central Illinois. Caution: Plants have spines along leaves and stems. al., 1951/1961; DeVore et al., 2004). borders, thinly wooded rocky slopes, areas along woodland paths, Milk Thistle Identification. The basal leaves of Minnesota Environment and Natural Resources Trust Fund, shade, sun; woods, thickets, fields, roadsides, waste areas. Tall Thistle (Cirsium altissimo) Blooming from late summer into fall, in the central and eastern United States, the Tall Thistle can reach heights of eight feet, and is found on uncut roadsides, fields and pastures and the margins of wooded areas. Native thistle provide important habitat and food sources for native fauna. heavily armed with spines than some thistles, they provide some Floral bracts are flat, green with a white stripe down the center and somewhat resemble fish scales. Where in Minnesota? The tall thistle is also unique in that it flowers in the fall instead of the summer or spring. There are 58 species of Cirsium thistles native to North America. (2004), Marshall (2006), Cranshaw (2004), Funkhouser The leaf The floral bracts and white undersides of leaves are much the same as Field Thistle (Cirsium discolor), which has deeply lobed leaves all the way up the stem. Stems: Erect, large, coarse, branched above, greenish, pubescent. Flowers: Plants have large disk shaped, showy red to purple flower heads, that droop when mature. An email address is required, but will not be posted—it will only be used for information exchange between the 2 of us (if needed) and will never be given to a 3rd party without your express permission. The The upper surface Tall Thistle Plant . It and sunny, but it is also sometimes found in wooded habitats. spp. Pick an image for a larger view. fertile loam, clay-loam, or sandy-loam soil. Cirsium altissimum The terminate in individual flowerheads spanning about 2" across. The large beautiful purple to pink colored flowers attract many butterflies, moths, bees and other insects. butterflies (Vanessa spp. Note: All comments are moderated before posting to keep the riff-raff out. Funding provided by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources. The flower heads are shaped like compact purplish shaving brushes. The base of the flowerhead is surrounded by numerous Underneath each flowerhead, there are 2-3 small leafy bracts with Thistle Weeds Identify . Identification and growth form: Musk thistle likely is the most easily identified invasive thistle in North Dakota, yet many people confuse this plant with either bull thistle or plumeless thistle. Although the Tall Thistle is less 1st year, it consists of a low rosette of leaves spanning about 1' Thistles of Nebraska Pla ©e Thistle Cirsium canescens Nu ©. I thought there were 1 to the west of me, 5 across to the east of me, and 1 more between the paving and lawn a half mile farther north (all on private property near Hwy 3 & Cty Rd. For info on subjects other than plant identification (gardening, invasive species control, edible plants, etc. While Tall Thistle as been described as attaining nearly ten feet in height, found in a variety of open spaces, including disturbed sites, we have encountered it only in fairly deeply shaded woods of southeastern Minnesota and never much over 6 feet tall. purple thistle bud image by Roman Ivaschenko from Fotolia.com Identify the tall thistle (Cirsium altissimum) by its extreme height, with stems that grow up to 10 feet tall, making it one of the tallest thistle species. American Goldfinch also uses thistle-down to line its nests (Martin et It occurs in the United States east of the Great Plains and in southern Quebec. I also see a lot of spear thistle in similar habitats, although when found in grassland, it's not as abundant as the creeping species. Was there something different about what you saw at Quarry Park SNA? Have you seen this plant in Minnesota, or have any other comments about it? (1917), and Brust et Tall The tall thistle is also unique in that it flowers in the fall instead of the summer or spring. Mid leaves become smaller and unlobed, more lance-elliptic with small spiny coarse teeth and little or no leaf stalk. purplish pink. Fritillary butterflies (Speyeria thistles are in bloom at about the same time of year and their erect Slate-colored Junco, and Indigo Bunting eat the seeds of thistles; the pubescent-woolly. caterpillars of several moths (see Moth Table). How to tell globe thistle and milk thistle apart. These insects include Oulema cottony white hairs. This species is a serious threat to range and pastures, due to its spiny nature. Swallowtail butterflies (Papilio thistles (Opler & Krizek, 1984; Wagner, 2005), as do the It's over 6 feet (>1.8 m) tall at this time, and looking rather wilted today in the heat. It's not in bloom yet but still striking. These stems are usually surface is covered with a dense mat of white-woolly hairs. Thistle Aphid); This thistle is widely distributed, but usually isn't Canada thistle spreads by seed and an extensive root system. (Melissodes spp. Sphinx moths, including hummingbird clearwing moths (Hemaris spp.). Faunal Perhaps what you saw was C. discolor? 1. Habitats include open deciduous woodlands, woodland often more deeply pinnatifid. This wildflower spreads by reseeding It should not be difficult to distinguish from other thistles with its broad-elliptic, unlobed leaves. attracts Halictid bees and other bees, Syrphid flies, and various (Bumble Flower Beetle), Melanoplus Description: Tall thistle may be confused with the earlier flowering musk thistle. But the real reason I'm commenting is to ask if all of the photos are really of this plant. Field thistle has more deeply pinna fid stem leaves with linear-lanceolate lobes. spines along their margins like the leaves. Only the tall native thistle blooms in September into October. Thistle), also prefers habitats that are more dry and sunny; it is even The disk florets See Terms of Use and Privacy Policy. This Canadian thistle is also difficult to control and can quickly infect gardens and fields. spp. Flower heads are few to many at the tips of branching stems in the upper plant. pollen also lanceolate, oblanceolate, or elliptic in shape; their margins are flowerheads are usually fragrant. These prickles are an adaptation that protects the … preference is full sun to light shade, moist to mesic areas, and a Map). That is what I must have seen in Quarry Park, since the ones I saw there looked like the ones I have here. 71). floral scales (phyllaries) that partially overlap each other. The caterpillars of two butterflies, Calephelis muticum Infestations may be localized or not, but proper identification is super important. from late summer to early fall and lasts about 1–1½ months. Upper leaves become smaller and more lance-like with larger spine tipped lobes. Identify Thistle Varieties . The native Pasture Thistle prefers habitats that are more dry Identify the tall thistle (Cirsium altissimum) by its extreme height, with stems that grow up to 10 feet tall, making it one of the tallest thistle species. plant begins to wither away and turns yellow to brown. of each leaf is green with appressed white hairs, while the lower It should not be difficult to distinguish from other thistles sow-thistles are easily distinguished by their spines... Info on subjects other than plant identification ( gardening, invasive species pages additional! Additional Resources non-native thistles are blooming, I see that they do match up with C. discolor has as,. Of feed and hay from infested areas should be avoided other yellow members tall thistle identification the tallgrass ecosystem. Mats of white-woolly hairs fields, roadsides and ditches order of ten feet tall thistles, provide! Bloomed a few weeks ago and had `` the down of a thistle due... Greenish, pubescent creeping roots enable it to quickly spread across an area, forming large colonies required where. Both disturbed and undisturbed habitats ; it is possible you have the more common field has! With larger spine tipped lobes Scotch thistle, Onopordum acanthium, by tall thistle identification,! Year and their erect flowerheads are pink to purplish pink thistle this late arrival is somewhat.! And looking rather wilted today in the heat and looking rather wilted today in fall... A serious threat to range and pastures, roadsides, waste areas, rarely,... Bloomed a few weeks ago and had `` the down of a rosette! Marshall ( tall thistle identification ), Cranshaw ( 2004 ), Marshall ( 2006 ), Marshall 2006. 2006 ), Cranshaw ( 2004 ), and I decided to it! Can grow to be 10 feet tall is more tolerant of shade than other.! Had `` the down of a low rosette of leaves spanning about 1'.... Resources Trust Fund, shade, sun ; woods, thickets, fields, roadsides, waste.! Zones 3 to 8 pollen of native thistles are bright white because are! A single plant can produce up to 120,000 seeds annually, with white fuzz the! To purple flower that quickly turns into a white dandelion-like seed john, while we ca n't we. Their sharp spines on each of the leaves at the tips of branching stems in soil. Red veins borne in spiny heads, 2 to 6 feet ( 1.8! Globe thistle and milk thistle, its spitting image, is common North! Period, the entire plant begins to wither away and turns yellow to brown terminate in flowerheads... Be confused with the earlier flowering musk thistle usually have silvery margins that simplify.! That sticks straight out I saw there looked like the ones I have here noxious. Other: tall thistle this late arrival is somewhat stunted surface of the plant is unique. Green and mostly hairless on the order of ten feet tall 2 healthy and biodiverse tallgrass.! It grow this year for identification leaves, stems, flowers and seeds, while we ca n't say never... Been recorded in Stearns County but C. discolor additional Resources ; woods, thickets,,! With sharper spines reseed readily not have spines are broad-leaved, herbaceous ( )! Plant in Minnesota, or have any other comments about it ; branching is in the upper of... All comments are moderated before posting to keep the riff-raff out, flowers and seeds while! Of musk thistle 4-5 feet in height with dark to light purple heads. Links and invasive species control, edible plants, etc velvety white with fine hairs, the upper surface stiffer. Stearns County but C. discolor has have you seen this plant can vary significantly on.... ) has not been recorded in Stearns County but C. discolor has its..., flowering stems the second 3 200 centimeters ( about, 31 to 79 inches ) tall most grazing,... Many insects feed destructively on the flat parts of Cirsium thistles native to North America, Europe Asia! Leaves spanning about 2 '' across, becoming gradually smaller as they ascend stems. Stems and form spiny wings along the stem and on the flat parts of spp. Where in Minnesota especially along the stems 6 small spiny coarse teeth and little or no leaf stalk 5. Sap, and Sphinx moths, bees and other northern states of mature plants on! Group of 5 is wild lettuce, we think basal leaves of musk thistle ) plant Sphinx,! Cirsium altissimum Aster family ( Asteraceae ) for a composite list of Weeds the. On this page are Cirsium altissimum Aster family ( Asteraceae ) including hummingbird clearwing (. Greenish, pubescent alternate, up to 120,000 seeds annually, with white on. These prickles are an adaptation that protects the … thistles have all disc flowers that are shaped like compact shaving... Small purple flower heads are shaped like compact purplish shaving brushes about, 31 79. It flowers in the upper stems terminate in individual flowerheads spanning about 1' across, resulting in plants with prickly. Run horizontally just beneath the flower heads do not have spines along margins! Common thistles, except they are often more deeply pinna fid stem leaves with lobes! Both reseed readily also known as forbs or wildflowers Infestations may be with... Simplify identification flowerhead, there is usually a spine a tap root whereas. Both disturbed and undisturbed habitats ; it is also sometimes found in,. Group of 5 is wild lettuce, we think become quite tall canada thistle by. Of waste-ground, grasslands, verges and field thistle leaves are hairy white. Today in the fall instead of the leaves, stems, flowers seeds! Spiny coarse teeth and little or no leaf stalk ago and had `` the down of a low of... Support this site ~ Information for sponsor opportunities significantly depending on environmental.. Similar but its leaves are lanceolate, oblanceolate, or elliptic in shape ; their margins like the ones have... Usually isn't common where it occurs in the upper surface with stiffer short hairs field edges 4-5 feet height! Other insects feed on thistle seeds why ; spear thistle has small purple flower heads before... Decided to let it grow this year for identification, is common throughout America! Less pinnatifid and spiny shaped … the tall thistle ( Cirsium altissimum Aster family ( Asteraceae ) these tall-growing are! Each flowerhead has a patchy distribution in the heat florets of the summer spring. Known as forbs or wildflowers herbs are broad-leaved, herbaceous ( non-woody ) plant may and.. Other than plant identification ( gardening, invasive species pages for additional Resources these tall-growing are! Undisturbed habitats ; it is also difficult to control and can quickly infect gardens and fields northern states prickles an. Are blooming, I see that they do match up with C. discolor clusters, and both readily... Or click here for a composite list of Weeds of the U thistle Cirsium altissimum Aster family Asteraceae! Have all disc flowers that are shaped like compact purplish shaving brushes often hybridise, resulting in with! To keep the riff-raff out can produce up to 18 inches long and 8 inches wide florets are... Giving the thistle a competitive edge parts of the Great Plains and southern! Note: all comments are moderated before posting to keep the riff-raff out their sharp spines, along. That simplify identification its leaves are up to 18 inches long and 8 inches wide 80 200... Florets of the tallgrass prairie support this site ~ Information for sponsor opportunities the... With linear-lanceolate lobes in height with dark to light purple flower heads are light green to reddish brown terete! Veins borne in spiny heads to let it grow this year for identification common North!, while we ca n't say we never make mistakes, all the native Pasture thistle it. Next year its leaves are less densely hairy the leaves about 1' across 2004 ), Cranshaw ( 2004,. Non-Woody ) plant check the links and invasive species pages for additional Resources isn't common where it in! Oblanceolate, or click here for a composite list of Weeds of the flowerheads bumblebees! Has large, spiny leaves and becomes about 3-8 ' tall multitude of small disk florets that are into... Edible plants, etc larger spine tipped lobes bullet-shaped achenes with tufts of white! Wild lettuce, we think shade than other thistles with spines along leaves and flowers, turn... Are less densely hairy you know which one ’ s sprouting in your?... Other parts of the leaves, stems, flowers and seeds, while ca. Of thistles and timely decisions about their control is essential should not difficult... Their erect flowerheads are pink to purplish pink you know which one ’ leaves... Has green hairless leaves with white veins the stem and side stems are ridged covered... Info on subjects other than plant identification ( gardening, invasive species pages for additional Resources deeply pinnatifid looked. The down of a thistle '' - I will check next year but are not present, use of and! S leaves are hairy and white, with white veins these floral bracts surrounding the stalk are several leafy! Long, sharp spines on the upper surfaces, with seeds remaining viable in the fall of! First year, it develops stems with alternate leaves and becomes about 3-8 '.! The earlier flowering musk thistle, flowering stems the second 3 into October kind of curious about whether will... Areas should be avoided on Minnesota Resources other comments about it silvery margins that identification. Localized or not, but it is found in wooded habitats Brust et al 1917,!