Whether you are controlling Canada thistle with chemicals or organically, you will need to do so repeatedly. As if I was there doing it all for you! Lawn weeds are usually a symptom of other problems like excess lawn thatch, compacted, nutrient-deficient soil and infrequent mowing. Use glyphosate for your garden, and use a broad-leaf herbicide containing 2,4-D or MCPP for your lawn. Like any weed, it’s best to remove Thistles as soon as you see them before they get a chance to root deeply. This article appeared in the May 2013 issue. They make digging thistle from your garden or lawn tricky, since one mature plant’s roots may wander into your neighbor’s yard. A mature plant can reach up to 4 feet in height. 1. Once seeds land in your lawn or garden and germinate, they send out spreading roots (rhizomes), which can extend up to 20 feet away from the plant, and many feet deep, in the right conditions. Hey folks. Do not let the thistle grow more than 3 inches tall. Read: Lawn Fertiliser: What, Why, When and How to Feed Your Lawn, Also Read: Lawn Feed Reviews: The Best Products From the Biggest Brands. It can be delicate balance- needing to get rid of invasive noxious weeds on your property while having minimal negative impact on the environment. If you add salt to the equation, Canada thistle can die off in a matter of a few hours. You must get the root or they will pop up again. Some thatch is a good thing because it protects the crown of the grass plant. Chemical control with labeled herbicides will drastically help with thistle control. Following are two reliable options. We are no longer supporting IE (Internet Explorer). It is important to know what weeds you may see in your lawn, and how to get rid of them carefully. If you follow these lawn care treatments, your lawn will be so thick and lush, there will be no room for weeds like Thistle to grow. Primarily Nitrogen, Potassium and Phosphate. The second product is a spreader sticker called StayPut. The are several species of Thistles that often plague gardeners and farmers all over the UK but most can’t tolerate regular mowing. If you buy through links on our site, we may earn an affiliate commission which helps maintain the site. Buy a sharp weeding tool now on Amazon now. Good lawn care practices will prevent Thistles and other weeds from growing back. Treating the whole lawn with a selective weedkiller concentrate is the only option. he months listed below are an approximate range and will vary from year to year and north to south in the state. Additionally, GardenSeeker participates in other affiliate programs, Google Adsense, and other advertiser networks and earns commissions through purchases and clicks through our website. But note that even if you use a pre-emergent, due to it’s root system it can still spread into your lawn from neighboring lawns. The Best Way to Get Rid of Thistles in Your Garden. Mowing too late, however, can spread the seed. It is adapted to a wide range of soil conditions, and spreads vigorously by wind-borne seeds and by way of its extensive, creeping root system. 2 answers Mogie. Besides, how do I permanently get rid of thistles? Sure, it has attractive purple blooms, but don’t be fooled. Canadian Thistle. It’s rare that your lawn will be taken over by just one type of weed. Dodder. AJR mom X2_katwoman. According to the USDA, vinegar is one of the most effective ways to control Canada thistle. Seedlings and new plants are easiest to kill, but take heart: There’s hope for beating mature ones as well. The first product is Zamzows Ultra Weed Control for Lawns. If you do nothing else to your lawn, just cut the grass regularly. Like most weeds, Thistles can grow in most soil types but they do excel in certain conditions; Like any weed, it’s best to remove Thistles as soon as you see them before they get a chance to root deeply. Q: For several years I have had a problem with thistles in the lawn. Mowing at a higher height to discourage growth 2. Both contain 2-4-D as well as other herbicides that will aid in the process of eliminating the Canadian Thistle and other broadleaf weeds. What is best way to get rid of Canadian Thistle? I'm a professional gardener with degrees in Horticulture & Landscape Gardening. Eventually, you may have to spray. I have several areas that were thick with thistle that are totally free of it now. With persistence and these proven methods, learn how to get rid of thistle for good. When using a weedkiller concentrate, be sure to read the instructions and mix the concentrate accurately. The vinegar needs to contain at least 20 percent acetic acid to be effective at killing weeds. It is adapted to a wide range of soil conditions, and spreads vigorously by wind-borne seeds and by way of its extensive, creeping root system. Dwarf Thistle or Cirsium acaule isn’t as common but it can make an appearance from time to time. —Marcie Mulligan. However, it is an effective way to remove larger plants. It is also much more environmentally and family-friendly than herbicides. Thank you. Instead, I get better results pulling the weeds from my lawn physically. In Indiana, Canada thistle normally initiates growth in spring, reaches the flower-bud stage the first week in June, and full flower about the third week of June. They seem to migrate in from the fields nearby. Cindy FARMGIRLS CAN DO ANYTHING!!! Canada thistle may not be completely eliminated even ater multiple herbicide applications over several years . Either pull them out by hand or use a hand fork another type of weeding tool. Remove the flowers immediately, bag them, and place them in the trash. Also: Dry, open and uncovered soil is like a thistle welcome mat. I have sprayed with Curtail by Dow for about three years. If you spot them early, removing them by hand is easy. Mowing the lawn regularly prevents the grass from growing too tall. his is an unattractive option for acreage enrolled in CRP since any mowing requires prior approval from the FSA (see below). If it’s already there, take heart. Canada thistle (aka creeping thistle) is a determined weed if ever there was one. The best defense against Canada thistle is a thick lush lawn that is properly maintained and well-fed. Usually, if there’s a lot of one type of weed, there will be plenty of others too. 1 decade ago. But note that even if you use a pre-emergent, due to it’s root system it can still spread into your lawn from neighboring lawns. Dodder. If the weed persists after digging them out, or the idea of digging weeds up sounds like too much hard work, you can give them a blast with a spot spray weed killer for lawns, such as Scotts Weedol Lawn Weedkiller Spot Spray or Resolva Spot Spray Weedkiller for Lawns. Creeping thistle can quickly spread in grassland areas and borders. You will need two products to get rid of the thistle in your lawn. I seem to have a nice stand of Canadian Thistle in my 2nd year wildflower garden. Get ready for a battle. I will bless the Lord at all times: his praise shall continually be in my mouth. Most thistles are problems in new lawns or lawns that are thinning from some other problem, especially drought. While Canada thistle will grow anywhere, it grows best in soil with low fertility and open areas. Janet Pizaro. This cool season perennial (Zones 2-8), known for its difficulty to kill and its desire to take over your garden completely and totally, is a scourge for gardeners. Consider laying down a weed barrier or mulch to slam the door on new infestations. If you want to get rid of weeds growing in your lawn, there are quite a few options available to you. It's very important to catch thistle at its early bud growth stage, before it can spread new seeds. 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