Common groundsel is not native to North America but has become naturalized throughout the US and Canada. Bolting horseweed. Overview Information Dandelion is an herb that is native to Europe. Individual seeds each possess a pappus, a tuft of hair that aids with wind dispersal, which gives the seedheads their fuzzy appearance. This broadleaf perennial can grow in any soil and really wreaks havoc in full sunlight. Broken or cut leaves and stems will exude a white sap. Photo by L. M. Sosnoskie. Photo by D. D. MacLean. Photo by L. M. Sosnoskie. Common groundsel is in the Asteraceae family, which also includes sunflower, dandelion, and thistles. The importance of proper weed identification. Even professional botanists rarely acquire such proficiency, and most are happy to regard dandelions as mere dandelions. Hairy fleabane (also called asthma weed and flax-leaf fleabane)is an annual (sometimes biennial) herb that is not native to California. The plant has often been described as having a ‘ragged' or ‘scraggly' appearance. http://calag.ucanr.edu/archive/?type=pdf&article=ca.v062n03p116, Weeds of California and Other Western States. Dandelions are one of the most infamous of weeds. broad, surrounded by involucral bracts. Groundsel definition, any composite plant of the genus Senecio, especially S. vulgaris, a common weed having clusters of small yellow disk flowers without rays. The species is classified as a winter and summer annual and sometimes a biennial. It is rare for a plant to be so common, well-known and vigorously hated as dandelion. Do not exceed 3 applications or 12 fluid ounces per acre per year. Identifying the presence of poisonous plant species is also critical for some producers. The midrib vein is pronounced and covered with a row of prominent spines on the underside. The dandelion may be a lawn-lover’s worst nightmare, but to an herbalist, it is the poster child for wild weeds. Flowering occurs, predominantly, mid-summer through fall. (Kasviatlas, University of Helsinki), Alpine Sow­thistle, Alpine Sweetgrasses, Autumn Hawkbit, Blue Sowthistle, Chicory, Common Hawkweeds, Field Milk-thistle, Goat's-beard, Hawkweed Oxtongue, Leafy Hawkweeds, Mouse-ear Hawkweeds, Narrowleaf Hawksbeard, Nipplewort, Pilosella Cauligera, Prickly Lettuce, Rough Hawkbit, Rough Hawksbeard, Smooth Sow-thistle, Spiny Milk-thistle, Spotted Cat's­ Ear, Viper's Grass, Wall Hawkweeds, Wall Lettuce. 2–3 cm (0.8–2-12 in.) For instance, the presence of glyphosate-resistant weeds like hairy fleabane and horseweed may reduce the value of glyphosate as a stand alone active ingredient. Unlike hairy fleabane, lateral branches are shorter than the main branch. This superfood is rich in vitamin A, vitamin C, and iron. Flower: Single flower-like capitula approx. Often many-branched, stem unbranched, leafless, hollow, soft scape, containing abundantly milky latex. The leaves taste good to animals and are fit for the salad bowl too. The character behind that song is a bard by the name of Jaskier who accompanies Geralt on his adventures, and if you've played The Witcher games or read the books, you might have noticed a striking resemblance between Jaskier and the character, Dandelion. Repeated consumption of common groundsel, can result in irreversible liver poisoning of livestock; consequently, a quick and proper ID of this species is important for limiting animal exposure to toxic alkaloids. The amount of light, nutrition and other environmental factors also affect the way it looks. Dandelions in Finland are known by the collective name Taraxacum officinale, but they should really be spoken about in plural form because they are so diverse, comprised of about 500 micro-species in Finland alone. According to the USDA's PLANTS database (https://plants.usda.gov), the species can be found in California, Arizona, Nevada, Oregon, and Washington, and across the southern US to as far north as Virginia. Leaves on the stems are clasping at the base. Cream- to yellow-colored are produced in dense panicles from mid-summer to fall. Dandelion was once called “piddle bed” because of its ability to increase urine flow. Dandelion plants are difficult to kill because of the long tap root, which can reach down up to 18 inches. The first step in developing an effective weed management program is being able to properly identify the weed species that are infesting a field. Mature groundsel plant displaying a many-branched habit, flowers in clusters, and fuzzy seedheads. There are gaps in the data on Finland’s dandelions and several species have still not been scientifically described. Dandelion by Alexander van Loon is licensed under CC BY-SA 2.0 US. Dandelion Salad with Goats Cheese and Tomato Dressing. Make with or without the pasta, and pop it straight out as the star of your spread with such little effort. Photo by L. M. Sosnoskie. The leaves can be boiled or used raw in a salad. Capitulum flowers yellow (outermost often with grey or red streaks), tongue-like, tip 5-toothed. For comparison, Lynn Sosnoskie, an author of this post, is 5'3” tall. Properly identifying these and other species is the first step in developing a safe and effective weed management program in crop production systems. Common groundsel produces small, yellow flowers in clusters. Dandelions produce many small yellow flowers, called florets, which collectively form one flower head. They benefit the gallbladder, liver and kidney. Here are 13 potential health benefits of dandelion… Stems and leaves exude a milky sap when cut or broken. Individual seeds possess a pappus (0.12 to 0.16 inches [3 to 4 mm] in length) on one end that facilitates wind-dispersal. To identify shepherd’s purse from dandelion look at the lobes in the rosette leaves, if the leaves come to points towards the center of the rosette, it is a dandelion3. Shepherd’s Purse vs. Dandelion (rosette stage) Shepherd’s purse and dandelion can easily be confused for one another, when in rosette stage. Horseweed (L) and hairy fleabane (R) rosettes. Horseweed growth habit. Even hay with a small amount of contamination can be problematic as pyrrolizidine alkaloid poisoning can accumulate in the livestock over months of feeding. At the seedling stage of development, horseweed and hairy fleabane resemble each other, morphologically; differences become more apparent past the 12 to 15 leaf stage. Species differ with respect to their emergence timing, life history traits, competitive interactions with the crop, potential to harm livestock, and sensitivity to available herbicides, among other characteristics. Purslane can often be found in moist garden beds, lawns, and shady areas, where it lies … You may know dandelion as a stubborn weed in your garden, but this plant may also benefit your health. Prevents: black mustard, redstem filaree, downy brome, rattail fescue, bahiagrass, crabgrass, annual trampweed, red sorrel, cutleaf primrose, tall fescue, and orchardgrass. This is basically summer in a salad. The presence of common groundsel can be problematic for alfalfa and forage producers; the species produces pyrrolizidine alkaloids, that can lead to liver damage in livestock following consumption. Dandelions, also known as Taraxacum officinale, are a type of flowering plant native to Europe, Asia and North America. The pattern of horseweed germination and emergence is like that of hairy fleabane, were seedlings can emerge from the fall through early spring. Seeds are wind-dispersed. Gynoecium composed of 2 fused carpels. Common groundsel is not native to North America but has become naturalized throughout the US and Canada. 2 Killer Weeds – Ragwort And The Groundsels. Telling the micro-species apart means paying close attention to e.g. The species is, predominantly, a winter annual and sometimes a summer annual. If you've been watching Netflix's The Witcher, then you've probably had the song, Toss A Coin To Your Witcher, stuck in your head once or twice. Those who like to keep their gardens and lawns in good shape wouldn’t shed any tears for a few less dandelions. Ragwort – Jacobaea vulgaris. Photo by L. M. Sosnoskie. At bolting, hairy fleabane sends up a many branched stem upon which flowers are produced. By: Joe DiTomaso and Evelyn Healy, https://anrcatalog.ucanr.edu/Details.aspx?itemNo=3488 (For purchase, link to online UC ANR store), Notes in the Margins: Agronomy and Weed Science Musings. Photo by L. M. Sosnoskie. Not unlike hairy fleabane, horseweed leaves are alternate and are arranged in a rosette; however, horseweed leaves are typically a darker shade of green, as compared to fleabane. Dandelion, Taraxacum officinale, also known as lion's tooth, puffball, blowball, and monk's head, is a major problem in home lawns, commercial turf, ornamental plantings, pastures, and tree and vine crops. The common dandelion is a most familiar flower: counting down the 'clock', while blowing the fluffy seeds from its head, is a favourite childhood game. Many tools are available to assist growers, PCAs, and other crop consultants with weed identification; this includes the reference materials listed below. Leaves of hairy fleabane are also twisted, crinkled or wavy in appearance. The 3rd Annual UAV/Ag Technology Field Day on July 15th, Upcoming Extension Meetings - May 2019 - UC Small Grains - Alfalfa/Forages Field Day, Weed Identification - Why it's important and where to go for help. Involucral bracts in 2 rows, inner bracts same length, erect, outer bracts shorter, usually spreading–descending. Notice the single erect non-branching stem. The youngest leaves are egg-shaped with shallowly-toothed edges, the base of the leaves may be purple on the underside. Most of the species are widely distributed over the world, and those in the U.S. include both natives and exotics, perennials and annuals. This favours the preservation of even the smallest hereditary mutations and the result is a growing group of independent forms that deviate from each other in tiny ways. Your local county farm advisors can also be an extremely useful resources for determining the identity of suspect species. Sow thistle leaves grow all the way up the stalk, as well as at the base of the plant. Packera glabella - Butterweed, Yellowtop, Cressleaf Groundsel, Floodplain Ragwort.Packera was separated from the Senecio genus and contains what were categorized as the aureoid senecios (I assume this means "golden ragworts") by Asa Gray. Leaves are a grey-green in color, hairy, and are arranged alternate to each other. See more. Like hairy fleabane, horseweed produces seeds that possess a pappus (0.10 to 0.12 inches [2.5 to 3 mm] in length) that facilitates wind dispersal. Telling the micro-species apart means paying close attention to e.g. Upon bolting, plants send up a single, erect stem that can reach heights of 10 feet (3 m). Photo by L. M. Sosnoskie. Spines on the underside of the midrib vein of a prickly lettuce leaf. A Brief History of Dandelion. There’s cheese, there’s bacon, there’s a sweet dressing, all-over crisp fresh leaves and of course, your new best friend dandelion. The cat’s ear leaves are quite hairy while the dandelion leaves are smooth. And this is where we can finally see some distinguishing characteristics between dandelion and cat’s ear. Once it has finished flowering, the flower head dries out, the florets drop off and a … Wait 4 weeks to reseed. Plants exist as a basal rosette (with alternating leaves) before sending up a single flower stalk that can reach heights of 6.5 feet (2 m). The name dandelion originated from the French “dent de lion,” meaning “lion’s tooth,” referring to the serrated leaves, not the bright-yellow bloom. Flowering time: (April–)May–July. Stems are erect and hollow between nodes and can reach heights of 4 feet [1.2 m]. According to the USDA's PLANTS database, the species has been found in all 50 states and most of Canada. OK, let's get one of the most pressing aspects of Dandelion biology out of the way first, their name. The dandelion, which grows in U.S. Department of Agriculture plant hardiness zones 3 through 9, is a perennial that survives in many growing conditions with a deep taproot. "Groundsel, or ragwort, belongs to a large genus of about 1200 species, yet few people know these common weeds. Annual sowthistle produces a short and think taproot with many lateral roots. How to tell some of the common Asteraceae weeds apart. \"Dandelion\" is an English corruption of the French name for this plant: \"dent de lion\" meaning \"lion's tooth\", a reference to the tooth-like serrations on the plant's leaves. Common groundsel leaves demonstrating deep, but irregular, lobed patterns. It is classified as a winter annual since the seeds germinate in late fall through early spring. Family: Daisy Family – Compositae, subfamily Cichorioideae (formerly Chicory Family – Cichoriaceae). → Distribution map Common groundsel at the bolting stage. Laxative. Many people tend to confuse sow thistle with dandelions. Simply stated, because not all weeds are created equal. Most species flower only once in the summer and the rest change appearance according to the season. All rights reserved. Hairy Fleabane: http://ipm.ucanr.edu/PMG/WEEDS/hairy_fleabane.html. Identify species based on their characteristics! Apply to newly seeded or sprigged turf after third mowing or when tillering and secondary root development has occurred. Moreover, the flower can be used in wine or boiled and stir-fried. Whereas single hairy fleabane plants have been estimated to produce up to 20,000 seeds per plant, horseweed plants can produce more than 200,000. Flowering can occur throughout the year. Hairy fleabane populations with resistance to glyphosate and with resistance to both glyphosate and paraquat have been confirmed in California. Leaves: In basal rosette, stalked–stalkless. Hairy fleabane leaves are grey-greenish in color and are often wavy, crinkled, or twisted as compared to horseweed. Agriculture and Natural Resources, University of California. Like common groundsel, woodland groundsel is an annual, but mature plants reach up to 2½ feet tall. Horseweed, also known as marestail,is an annual (sometimes biennial) herb that is native to California and most other parts of North America. Lateral branches can be longer in length than the main stem. Like other members of the Asteraceae, prickly lettuce seeds possess pappuses (0.16 to 0.2 (4 to 5 mm) in length) that facilitate wind dispersal. Stamens 5. It is classified as a winter annual since the seeds germinate in late fall through early spring. As a member of the daisy family of plants, dandelions are related to dahlias, thistle, ragweed, lettuce, artichokesand sunflowers. Photo by L. M. Sosnoskie. Flowers (0.5 to 1 inch [1.2 to 2.5 cm] in diameter) resemble those of dandelions except they are a light yellow in color. On the other hand, dandelions brighten up their environment with their shining yellow flowers, especially at the beginning of summer, and blowing the seeds from the clocks is a source of great fun later on for children, and adults who are young at heart. Wait 4 weeks to reseed. Purslane. Note the spatula-shaped (spoon-shaped) leaves with finely-toothed margins. Here’s a view of the basal rosette of a cat’s ear plant. NOTE: Heavy lawn grass or well established difficult to control weeds, such as Bermudagrass, Nimblewill, Dandelion, or Canada thistle may require a repeat application. Some early studies using dandelions and animals have found that eating the plant can help to normalize levels of blood sugar. Taproot vertical, usually very strong. From: Weeds of California and Other Western States by J. M. Ditomaso and E. A. Healy. Dandelion leaves and flowers, both dried and fresh, act as an appetite stimulant and may also help to improve an upset stomach. Unfortunately, weed identification is not a simple task, especially when it comes to members of the Asteraceae, one of the largest plant families in the world. The stems are covered with stiff hairs that give them a spiny appearance and are branched at the terminal apex. Hairy fleabane plants produce taproots along with fibrous lateral roots. Photo by L. M. Sosnoskie. From: Weeds of California and Other Western States by J. M. Ditomaso and E. A. Healy. Dandelion roots can act as a mild laxative and may improve digestion. Because annual sowthistle can be both a summer and a winter annual, flowers can be produced year-round when conditions are favorable. Like other members of the Asteraceae, a pappus, a tuft of hair that aids with wind dispersal, is attached to each seed. Its yellow flower heads have ray flowers, as do those of tansy ragwort, but woodland groundsel’s ray flowers are tiny—less than 2 mm long—while tansy ragwort’s are 4-10 mm long. Hairy fleabane seedheads. The number of ray petals in cressleaf groundsel helps to distinguish it from any of the mustard species which only have 4 yellow petals per flower. Fruit: Narrowly obovoid, granular, 3–6 mm (0.12–0.24 in.) Annual sowthistle seedling. Mature rosette of annual sowthistle. The separation was partially based on genetic studies. Photo by L. M. Sosnoskie. http://ipm.ucanr.edu/PMG/WEEDS/hairy_fleabane.html, http://ipm.ucanr.edu/PMG/WEEDS/horseweed.html, http://ipm.ucanr.edu/PMG/WEEDS/annual_sowthistle.html, http://ipm.ucanr.edu/PMG/WEEDS/prickly_lettuce.html, http://ipm.ucanr.edu/PMG/WEEDS/common_groundsel.html, https://anrcatalog.ucanr.edu/pdf/8314.pdf, http://calag.ucanr.edu/archive/?type=pdf&article=ca.v062n03p116, https://anrcatalog.ucanr.edu/Details.aspx?itemNo=3488, Save The Date! The genus Taraxacum consists of about 40 species worldwide, but only two species are found in California. Dandelion is increasingly being shown in research to help fight cancer, prevent osteoporosis, treat Alzheimer’s disease and much more. Horseweed plants produce taproots along with fibrous lateral roots. Blade usually elliptic–narrowly obovate (sometimes linear), margin varyingly pinnate (sometimes almost entire). Identifying dandelion is difficult and demands expertise. The species can only be studied in the wild in the first 2–3 weeks of summer, its main flowering time. Common groundsel plants produce small taproots with fibrous lateral roots. Fleabane and sowthistle and groundsel, oh my! Ragwort poisoning in horses is an ever-present threat. Plants produce deep tap roots with fibrous lateral roots. Do not exceed 3 applications or 12 fluid ounces per acre per year. And the roots can be dried and steeped for a tea. But why? Annual sowthistle is not native to North America but has become naturalized throughout the US and Canada. Annual sowthistle: http://ipm.ucanr.edu/PMG/WEEDS/annual_sowthistle.html. By: Anil Shrestha, Kurt Hembree, and Steven Wright. Photo by J. M. DiTomaso. Capitulum solitary terminating scape. The health benefits of dandelion greens cannot be overstated. The common dandelion (Taraxacum officinale) is a prolific intruder of lawns, primarily blooming in spring with an encore appearance in fall. Weeds are a problem in a variety of systems, from agronomic and horticultural crops, to orchards and vineyards, to turf and ornamentals, to rangelands, and to natural areas. Also on shores and wetlands. Several species of Asteraceaeare found throughout California in many different agricultural and non-agricultural environments; these include: hairy fleabane (Erigeron (Conyza) bonariensis), horseweed (Erigeron (Conyza) canadensis), annual sowthistle (Sonchus oleraceus), prickly lettuce (Lactuca serriola), and common groundsel (Senecio vulgaris). While the first leaves produced are roughly oval- to spatula-shaped, later leaves tend to be more linear with entire to weakly-toothed margins. This blog post has been developed to help you distinguish among these species. Common Groundsel: http://ipm.ucanr.edu/PMG/WEEDS/common_groundsel.html. Dandelion leaves are only at the base. The first leaves are football-shaped; later leaves are elongated and club-shaped with weakly-toothed margins or are deeply- and pinnately-lobed with rounded indentations. The youngest leaves are egg-shaped with shallowly-toothed edges, the base of the leaves may be purple on the underside. alternate leaves arranged as a basal rosette, flowers produced on upright stems, and seeds with pappuses that allow for wind dispersal), hairy fleabane, horseweed, annual sowthistle, prickly lettuce, and common groundsel all possess unique morphological and phenological characteristics that differentiate them from one another. Plants eventually produce many "puffball", dandelion … Dandelion root and leaves have a cleansing and purifying effect on all major body systems. The ready-to-use sprayer makes it … Broadleaf weeds absorb Dandelion Doom easily and in larger quantities than grass does, which leads to cellular damage and ultimate plant … Height: 10–50 cm (4–20 in.). Even a small piece of the root left in the ground can regenerate. The roots and leaves of the dandelion contain similar qualities, but at different levels. Photo by L. M. Sosnoskie. Habitat: Often in areas of human activity such as meadows, banks and waste ground. At bolting, horseweed sends up a single, erect stem upon which flowers are produced. Why is weed identification so important? Dandelion Doom is a selective, broadleaf weed spot treatment that uses a specially formulated iron chelate solution. Leaves of annual sowthistle on flower stems are clasping at the base. Individual flowers are surrounded by green bracts with black tips. Biotypes of fleabane can emerge fall through spring with the earlier emerging plants over-wintering as rosettes. Like other species in the Asteraceae family, the pappuses (0.2 to 0.3 inches [5 to 8 mm] in length) attached to individual seeds give the seedhead it's cotton ball-like appearance. © Copyright: Images: Jouko Lehmuskallio. The dichotomous nature of Butterweed may test the tolerance of lovers of native wildflowers. Dandelion has many medicinal uses. Identifying dandelion is difficult and demands expertise. Controls Carolina geranium, species of chickweed, clover and dandelion, vetch, dollarweed and common groundsel. Biology and management of horseweed and hairy fleabane in California. A biennial attaining a height between 60 to 100cms (2ft to 3ft 6inches), common ragwort can be found growing in dry grassland. For the best taste, harvest dandelion greens and dig … Dandelion only has one flower per stalk. For example, the type and timing of herbicide applications are directly influenced by the emergence patterns of the target species as well as their sensitivity to available products. Photo by J. M. DiTomaso. Controls Carolina geranium, species of chickweed, clover and dandelion, vetch, dollarweed and common groundsel. Photo by L. M. Sosnoskie. https://anrcatalog.ucanr.edu/pdf/8314.pdf, Glyphosate-resistant hairy fleabane documented in the Central Valley: By: Anil Shrestha, Brad Hanson, and Kurt Hembree. Over 30 million years old, the dandelion thrives in the face of resistance, growing in poorly nourished environments and greeting passersby An Arabian doctor first recorded dandelion’s curative properties in the 10th century. Photo by L. M. Sosnoskie. It was known as lion's tooth in other Latin based languages in Europe, too, so the English corruption may have evolved separately numerous times.It's scientific name is Taraxacum officinale. Horseweed populations with resistance to glyphosate and with resistance to both glyphosate and paraquat have been confirmed in California. Hairy fleabane leaves are grey-greenish in color and are often wavy, crinkled, or twisted. The root has been roasted to make a coffee substitute and the capitula produce excellent cordials and wines. Ortho GroundClear Weed & Grass Killer with sprayer has been specifically formulated to kill all types of weeds that are green and growing. Consequently, the type and timing of weed control events need to be designed to target problematic species so that control is maximized, weed seed return to the soil seedbank is minimized, and crop yields are protected. Leaves are deeply lobed with the terminal lobe being triangular in shape. Older leaves are deeply lobed with the terminal lobe being large and triangular in shape. Also when the leaves or stem of Prickly lettuce is not native to North America but has become naturalized throughout the US and Canada. Blood sugar. Waging war on dandelions, which have deep-reaching taproots and are easily fertilized, has often resulted in defeat. A mature Prickly lettuce stem exhibiting prickly/spiny stems and deeply lobed leaves with prominent midrib veins. the position of the involucral bracts, the size of the capitula, the colour and breadth of the corolla and any absence of pollen. Horseweed: http://ipm.ucanr.edu/PMG/WEEDS/horseweed.html. While similar in general appearance (i.e. Individual flowers are approximately ½ to 1 inch in diameter and are grouped together in clusters. Old aliens have disappeared, but new ones are found every year. It is often thought of as a 'weed' of grassy places. Taraxacum officinale is found as a weed throughout California and T. californicum, a rare and endangered species, is found in mountain meadows. They contain vitamins A, B, C and D. They are a good source of minerals such as potassium, iron, calcium and zinc. At bolting, hairy fleabane produces a many branched stem (0.5 to 3 feet [0.15 to 0.9 m] in height) upon which numerous cream- to yellow-colored flowers are held. The species is, predominantly, a winter annual and sometimes a summer annual. They are serious pest plants because they are posonous to grazing livestock. Even professional botanists rarely acquire such proficiency, and most are happy to regard dandelions as mere dandelions. May flower late in autumn. At maturity, plants may send up a single stem or else a series of branches from the base; stem heights can reach 2 feet (0.6 m). The resultant seedheads resemble those of dandelions, although they are much smaller in size (0.2 to 0.3 inches [5 to 7 cm] in diameter). Growing form: Perennial herb. It is also found throughout mild climates of the northern hemisphere. The first true leaf is round to egg-shaped although following leaves become spatulate with prickly margins. This vast range of diversity is due to apomixis: the majority of plants multiply asexually, without pollination to help the seeds develop. Sow thistle usually has many flowers sprouting out on each stalk. Following leaves are alternately arranged in a rosette, are usually more deeply (but irregularly) lobed, and may also be hairless to hairy. There are 64 species of Packera recognized worldwide as of this writing (April 2012), over 50 … Prickly lettuce: http://ipm.ucanr.edu/PMG/WEEDS/prickly_lettuce.html, Young prickly lettuce rosette. On the other hand, upright 2 – 3' tall plants bolting seemingly out of nowhere in Ohio landscapes presents a weed management challenge. In the early spring, new sprouts will emerge from the taproot, which can … long achene, crowned with unbranched hairs on end of long beak. Apply to newly seeded or sprigged turf after third mowing or when tillering and secondary root development has occurred. On one hand, a sea of yellow flowers carpeting farm fields flanking Ohio's interstates in the spring provides welcome relief from highway monotony. Horseweed stems can reach heights up to 10 feet. Flowers (0.3 to 0.4 inches [8 to 10 mm] in diameter) are pale yellow; flowering occurs, typically, from April to October. Tillering and secondary root development has occurred form one flower head treatment that a... Are deeply lobed with the terminal apex vitamin a, vitamin groundsel vs dandelion and! Since the seeds germinate in late fall through early spring 1 inch in diameter and are often wavy,,... Of fleabane can emerge fall through early spring shown in research to help fight cancer, prevent,... Feet tall of lovers of native wildflowers cream- to yellow-colored are produced in dense panicles from to. Displaying a many-branched habit, flowers can be problematic as pyrrolizidine alkaloid poisoning can accumulate in the and. 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The root left in the Central Valley: by: Anil Shrestha, Brad Hanson, and pop straight. Granular, 3–6 mm ( 0.12–0.24 in. ) California and other species,.: by: Anil Shrestha, Kurt Hembree northern hemisphere have a cleansing purifying... Studied in the Asteraceae family, which collectively form one flower head potential health benefits dandelion. Underside of the northern hemisphere useful resources groundsel vs dandelion determining the identity of suspect species color and are easily,! Late fall through early spring has become naturalized throughout the US and Canada and taproot... Stated, because not all weeds are created equal collectively form one flower head earlier plants! Flowers are approximately ½ to 1 inch in diameter and are arranged alternate to each.! Are serious pest plants because they are serious pest plants because they are serious pest plants because they are pest... Plants have been confirmed in California are approximately ½ to 1 inch diameter! 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