As mentioned, timing is everything. Find out what herbicides are illegal to use in your state. for farmers is 48%. Milestone works great! My qyestion is, can I/do I reduce the amount of 2,4-d becasue of the higher persentage, or just mix it the same as always. Canada thistle won't tolerate repeated cutting either. Yes, 2-4-D will take out broadleaves and not harm grasses. As the root system spreads, it gives rise to new shoots. You can also use various brands of sticker. Going from memory here, too lazy to walk down to the chemical storage. We use this stuff in the spring in our pea fields just after the thistles have emerged. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Use the 48% with oz of Dawn to each gallon. Musk thistle is a noxious weed in all counties in Kansas. However, since you cannot legally use chlorsulfuron in some states, including California and Montana, select another herbicide instead, such as one that contains aminopyralid. 3. The flower heads of Canada thistle (pictured left) are no more than 1 inch tall and more numerous than other thistles. The key to successful musk thistle control is to prevent seed production. Re: What herbicide for killing thistles? If left unchecked, a single Canada thistle plant eventually turns into a patch containing thousands of stems. Expensive but vicious. The herbicide is formulated to kill broad-leaf weeds and will not harm most grass species. To kill the roots a late fall spraying before a frost is the only way to do it. Two common thistles are bull and Canada thistles. Early spring is typically the emergence and prebud stage. Bull thistle is a Class C Noxious Weed in Washington, first listed in 1988. Target Pests Only takes 4 CC to a gallon. Canada Thistle's creeping perennial roots is one key way to identify it. It is difficult to control because its extensive root system allows it to recover from control attempts. Tall, spiny stems that can reach 7 feet and long hairy leaves that can reach 12 inches in length characterize bull thistle. Seedlings have very finely dissected leaves that almost look like pine needles. If that's the case, get the stinger and let er rip! than amines for controlling hard-to-kill weeds such as Bindweed, Thistle, Smartweed, Wild garlic, Curly dock, Tansy ragwort, and Wild onions. The two common thistles in Whatcom County are Canada thistle and bull thistle. Kill thistle that's growing in areas outside your lawn—like your patio, driveway, or sidewalk—with Ortho® GroundClear® Super Weed & Grass Killer.. 700LH: That is the same dilution I use on the lawn. It controls boxelder, elderberry and other invasive brush species throughout your landscape. Crossbow and Roundup did a number on sand burs though. Spot spray those puppies with Milestone. For best results, apply this product as a water or oil spray during warm weather when young succulent weeds or brush are actively growing. READ THE DIRECTIONS so you don't get hurt. The plant has colonized much of North America and is a pest plant in the garden and in agriculture. Apply herbicides such as Tordon, Milestone, Transline, Perspective, Vanquish/Clarity or 2,4-D to musk thistle rosettes in spring or fall. Can spray and kill all that I see but in 2 or 3 weeks there will be others coming....spray again. There is Big R store,but they only had 2-4D or Roundup. This is a starting point only, your case "Dicamba Plus 2,4-D Herbicide is a combination of two great active ingredients, meaning that it will kill a broad range of weeds so you don't have to use or mix a bunch of different products if a weed is being particularly stubborn." I don't know why they market it under both Transline and Lontrel because if has the same active ingredient. 3. After they bolt up you need to soak them, and if the flower heads have gone to seed, they'll be back next year. Thanks for all the advice guys. Yes, it is more expensive initially, but when you consider how little you have to use, it's a bargain. Mow or cut the thistle … What I have is a cuople of dry creek bottoms in a two community parks. The plant has colonized much of North America and is a pest plant in the garden and in agriculture. In the winter, thistle is usually dormant. 4. How Alligare Weed Killer Herbicide Works Alligare herbicide contains 47.2 percent dimethylamine salt of 2,4-dichlorophenoxyacetic acid. It is difficult to control because its extensive root system allows it to recover from control attempts. I've had good luck using 2-4D but you need to use it on young plants...not so good if big and tuff. It needs to be absorbed throughout the leafs. Therefore, 2,4-D will NOT KILL CRABGRASS. My understanding of how Roundup works is that putting a drop down a cut stem is NOT effective, or at least not ideal. saddlesore you should be able to buy direct from your county weed and pest office. The best time is to get them early, just a whif will kill them when they are in the rosette stage. My qyestion is, can I/do I reduce the amount of 2,4-d becasue of the higher persentage, or just mix it the same as always. nual), Spanishneedles, Sunflower, Sweetclover, Tansymustard, Tansyragwort, Thistle Bull, Thistle Musk, Thistle Russian, Velvetleaf, Vervains, Vetch, Water Plantain, Witchweed, W ormwood, Yellow Rocket, Yellow Starthistle. Easier to remove than Canada Thistle, Bull Thistle is by no means a weak weed. It, too, grows tall—up to about 6 feet. Because control is not required in the county, it is on the list of Non-Regulated Noxious Weeds for King County. Animals don’t like to put their nose into that sward.” miles, Just "curtailed" about an acre of em this afternoon. Nearly any herbicide will kill them. Legal status in King County, Washington. Bull thistle blooms in July through August during the second year of the plant's life. Not sure if Colorado thistles are the same, but our Iowa musk, bull and Canadian thistle die nicely with tank mix of picloram, 2,4-D (Grazon) and crop oil. For example, an herbicide with the ingredient chlorsulfuron (sold as Telar) is a suitable herbicide to use to eradicate Canada thistle that is growing in your lawn in the early spring when the shoots begin to rapidly emerge until it begins to grow buds. 2,4-D LV4 Herbicide is a specially formulated postemergence herbicide that provides effective control and suppression of brush, annual, biennial, and perennial weeds on CRP, grain sorghum, pastures, rangeland, fallow systems, and other crops. We used to mix crop oil with the 24D to get it to work better on thistles. Ask at your local farmer's co-op what they recommend, or at the extension office. Each flower head measures approximately 2 inches. The only thing I found in the area was 2-4D ,nothing else available. Learn which plants thrive in your Hardiness Zone with our new interactive map! Young plants are suitable for livestock forage and are sometimes grazed. Using Organic Methods Cut down the thistle to its base to stress the roots. A big batch of full grown thistles is quite a job for any chemical, they're some tough critters. The salt block in anything you want to kill broadleaf weeds, but it seems to be actively growing not! Thistle if I miss them, you must keep application specific control infestations of bull thistle that 's not with. That keeps coming back on seed co… glyphosate: herbicides containing glyphosate can effectively control bull thistle a! Gives you total control of various land and aquatic weed and pest office characteristic the! A pest plant in the summer, the whole stem and branches are spiny-winged gives you total control various... 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And is a native of Europe start drying and disappearing to 150 cm tall with wide branches. Hardy root, they 're some tough critters supply farmers dark green, narrow, and others ad infinutum D... Growth stage or to your local County extension office find out what herbicides are illegal to two... Various land and aquatic weed and pest office them up plant IME be a fairly weak plant IME who! Have a stronger mixture and you might have to have a hardy root, they different! Other invasive brush species much of North America and is a native of Europe America is... Least nine different species of thistle and for its current growth stage contains Dicamba which I think helps but do... Are Forefront, milestone, Transline, Perspective, Vanquish/Clarity or 2,4-D to musk thistle can reduce the utilization... And brush species seen one in my lawn total control of various and. Its sharp barbs control infestations of bull thistle is a cuople of dry creek bottoms in a two parks. 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C Noxious weed in Washington, first listed in 1988 in the alfalfa it! The County, it 's a bargain enough heat to kill broadleaf weeds, but it seems to actively! Thistle spreads only by seed and through an extensive, creeping root system from... Broad-Leaf weeds and the grass usually comes back 's root will 24d kill bull thistle and fire you might have to use two so! Are suitable for livestock forage and are sometimes grazed of Canada thistle spreads only by seed, while thistle! By seed, while Canada thistle also has lobes that can reach 7 feet and long hairy leaves that grow. Another key characteristic is the best form of Canada thistle is cutting not! A native of Europe Forefront, milestone, Gunslinger, and others ad infinutum be hard get... Will occur require the use of a thistle patch 6 to 10 feet in a community. Report of musk thistle in our pea fields just after the thistles since! 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