How do you kill thistle weeds?

Asked By: Haizeder Chabot | Last Updated: 7th May, 2020
Category: home and garden landscaping
4.1/5 (58 Views . 45 Votes)
Trying Natural Herbicides. Spray white vinegar on the thistles to slowly kill them. Pour household white vinegar into a spray bottle. Then, spritz the vinegar directly onto the thistle plants until the plants are dripping with vinegar.

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Thereof, how do you kill thistles naturally?

The vinegar needs to contain at least 20 percent acetic acid to be effective at killing weeds. Filling a spray bottle with this type of vinegar plus 3 tablespoons of table salt makes an effective homemade thistle herbicide. Saturating the unwanted plants once a week with this mixture helps control the problem.

Likewise, how do you get rid of thistles with vinegar? Vanishing with Vinegar

  1. Pour vinegar into a spray bottle.
  2. Cover nearby plants with boxes or shield them with cardboard so you do not overspray the vinegar onto desired plants.
  3. Spray the vinegar directly on the foliage and stems of the thistle plants.
  4. Pull the thistle from the ground or cut it back once it dies.

Also know, will Roundup kill thistles?

You can spray thistles with Roundup, an herbicide for home use, containing glyphosate as the active ingredient. Roundup works well because it penetrates herbaceous stems and translocates to the roots. Apply Roundup herbicide in early spring after active growth begins but before flowers expire.

How do I permanently get rid of thistles?

Apply herbicides to kill thistle, especially in spring and fall, before thistles can flower and seed. Use glyphosate for your garden, and use a broad-leaf herbicide containing 2,4-D or MCPP for your lawn. Since glyphosate kills all plants, you must keep application specific.

30 Related Question Answers Found

How do I get rid of thistles and dandelions?

You can spot spray the weeds in the fall using an organic herbicide such as vinegar. Spray them, wait a week, if they start coming back spray them again a week later. Do this for 2-3 weeks and you'll drain a lot of the reserves from the roots. A combo of the weed hound and spraying works well.

How do you get rid of thistles without chemicals?

Trying Natural Herbicides. Spray white vinegar on the thistles to slowly kill them. Pour household white vinegar into a spray bottle. Then, spritz the vinegar directly onto the thistle plants until the plants are dripping with vinegar.

How do you get rid of thistles in your lawn?

It is possible to kill the thistles in your lawn, but you can't do it overnight. A very effective way to remove them is to cut them off at ground level. Remove the whole top, but do not disturb the roots. When you cut the top, you deprive the root of its food, and it cannot make more food without green leaves.

What are thistles good for?

Milk thistle is used as a natural remedy to treat a range of health conditions. Milk thistle is also known as Mary thistle or holy thistle. It is mainly used to treat liver problems, but some people claim it can lower cholesterol and help manage type 2 diabetes.

Does vinegar kill grass?


Grass. Spraying vinegar over your entire lawn is not the best way to control weeds. It might kill the weeds, but it's just as likely to kill the grass. Pour the vinegar directly onto the weed, or wipe the weed's leaves with a sponge dampened in vinegar for the best chance of killing only the weed.

How do you get rid of thistles with salt?

How to Kill Canadian Thistle Using Salt or Vinegar
  1. Fill an empty spray bottle with vinegar. Do not dilute the vinegar with water as this makes it less efficient at killing weeds.
  2. Cut the stem of each thistle plant with a knife.
  3. Spray one to two sprays of vinegar directly on the cut of each thistle plant.
  4. Sprinkle a pinch of salt at the base of each plant.

Will boiling water kill thistles?

Please note that boiling water will kill any vegetation that it comes in contact with so this method should not be used if the Canada Thistle has infested an area that already contains plants you want to keep. The herbicide will work much more effectively on a weakened plant.

How do you stop thistles from growing back?

Grab a Spray Bottle
To treat thistles growing in a vegetable garden, wait until fall, if possible, after the vegetables have been harvested or died back. Spray the thistle plants liberally with a ready-to-use formula made for home gardeners containing 2,4-dichlorophenoxyacetic acid, triclopyr or glyphosate.

How long does it take for Roundup to get to roots?

After 30 minutes, the product is rainproof, and the weeds should begin to wilt and yellow in about three hours, with a complete kill down to the roots in one to two weeks.

How do you kill a perennial garden?


Crush or cut perennial foliage before spraying all plant parts with a ready-to-use systemic herbicide, such as 2 percent glyphosate, until thoroughly wet. Remove dead foliage after two or three weeks, after you see that the herbicide has taken effect.

What is bull thistle good for?

How Has the Bull Thistle Been Beneficial? The bull thistle plant was used by early humans as a warm medicinal tea. The roots were also used as an aid to digestion, and to treat stomach cramps. The leaves were used to treat neuralgia, and the fresh flowers were chewed to cover the medicinal tastes.

How do you get rid of yellow starthistle?

Hand pulling or hoeing are most effective in a maintenance program for an area where yellow starthistle is relatively sparse. Take care to remove as much of the taproot as possible. Anticipate that hand removal will need to be repeated in about 2 weeks to remove missed plants or those maturing at a later time.

What is bull thistle used for?

Clinical work with a number of sufferers of spondyloarthropathy (including psoriatic arthritis, juvenile spondyloarthropathy, and the arthritis accompanying inflammatory bowel disease) appears to confirm a little-known, folk- medicinal tradition that Cirsium vulgare (bull thistle) supports the health of joints, tendons

Does Roundup kill Canada thistle?

Herbicides that are effective on Canada thistle will injure or kill most broadleaf plants (including legumes) and glyphosate will injure or kill grasses. Destruction of the extensive underground root system of Canada thistle is imperative to assure that resprouting does not occur.

Does vinegar kill weeds permanently?


There is evidence to say that vinegar does kill weeds permanently and can be really effective at keeping your flowers and displays weed-free. From thistle to horsetail, you can use malt, distilled, white vinegar and even apple cider to stop the spread of weeds in your garden.

Does white vinegar kill thistles?

To recap, vinegar is an environmentally-friendly method for killing thistles and other weeds in gardens, grass, and rocks. Simply pour some undiluted distilled white kitchen vinegar into a spray bottle. Spray the plants that you want to kill with the vinegar.

What kills Milkthistle?

Glyphosate: can effectively kill milk thistle and any other vegetation including grass. Treatment with glyphosate needs to be combined with effective re-vegetation of the site to prevent milk thistle seedlings from re-infesting the area.