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Thistles in the lawn

Dealing with thistles in your lawn can be a daunting task. These stubborn weeds, with their deep roots and prickly leaves, not only detract from your lawn’s appearance but can also be a challenge to remove completely.

But with the right approach and tools, maintaining a thistle-free lawn is entirely achievable.

The best way to get rid of thistles is by uprooting the plants completely, or using a herbicide that contains glyphosate.

It’s important to cover the entire area in order to kill all the thistles. Doing so will ensure that these pesky plants don’t grow back.

How to Spot Thistles in the Lawn

When looking for thistles, look out for spiny leaves that appear in clusters. If you pull them up, they will have a taproot, similar to a carrot.

Thistles are also light purple or yellow in color and have flowers that may look like dandelions with spiny leaves.

How to Remove Thistles in Your Lawn

Once the thistles have been identified, it’s time to start removing them. The most important thing when dealing with thistles is to make sure that you remove weeds from your lawn as quickly as possible.

1. Remove Thistles By Hand

Sometimes, putting on gloves and uprooting thistles by hand is a quick and effective way to get rid of them. If you are dealing with creeping or dwarf thistles, you can uproot them by hand and kill them.

However, many other thistles can easily grow back even if you do your best to remove them completely. Even if you use a weeder tool, some species of thistle will still recover. In that case it’s best to use a weed killer.

2. Use a Herbicide

Herbicides are the most effective way to get rid of thistles and one of the most popular brands is Roundup.

Roundup is a non-selective herbicides which means it will not only kill the thistles, but also the surrounding grass so it’s important to apply it with caution.

Round up Weed Killer

3. Use a Stand-Up Weed Puller

A stand-up weeder puller is a tool you can use to pull out thistles and other weeds. This tool lets you pull weeds without bending down or kneeling, which makes it easier for people with back problems.

4. Cutting Off The Flowerhead

By cutting off the flowerhead of a thistle before it has had a chance to set seed, you can prevent them from spreading throughout your lawn. This should be done when the thistle plants are still in their early stages, as once they have set seed it is much harder to get rid of them.

How to Prevent Thistles From Growing in Your Lawn

Once the thistles in your lawn have been removed, you can take proactive steps to ensure that they don’t grow back. Here are some tips for preventing future growth.

1. Fertilize Your Lawn

Regular fertilization of your lawn is essential in helping to prevent thistle growth. Fertilizer should be applied at least once a year, as not doing so can leave room for weeds and other unwanted plants to take over and thrive.

Thistles and other weeds can survive in environments with fewer nutrients, but proper fertilizing will help your grass to grow and fill in any empty spaces to reduce the likelihood of them taking root.

With adequate fertilizer, your lawn will be better equipped to block out thistles and other weeds from invading.

2. Reseed the lawn

One of the best ways to stop thistles from invading your lawn is to reseed grass. When the turf is properly maintained through watering, fertilizing, aeration and other maintenance, this helps crowd out potential thistle growth.

By having lush, healthy grass all over your lawn, there will be no room for thistles to take root and grow.

3. Aerate Your Lawn Regularly

Compacted soil makes it difficult for air, water, and nutrients to reach the ground. This results in poor conditions for grass growth but allows thistles to thrive.

To help prevent this from happening, it is important to aerate your lawn regularly. By doing so, you create an environment that is better suited for grass growth and less conducive for thistle growth.

How to Remove Thistles Without Killing the Grass?

Organic weed killers like Captain Jack’s Lawnweed Brew and Adios Organic Weed Killer are effective ways to control thistle without harming your grass or other plants in your lawn. Both products must be applied multiple times during the Spring and Fall to weaken the thistle’s deep root system.

Do Thistles Die in the Winter?

Yes, most species of thistle will die back in the winter, when temperatures drop and light levels decrease. This is why it is a good idea to remove them from your lawn in late autumn or early winter.

This will reduce their numbers and make it easier for you to deal with any remaining ones in the spring.


Thistles can be difficult to remove from lawns, but with the right approach, you can get rid of them without killing all your grass.

The best way to do this is by using a herbicides that contains glyphosate, like Roundup. But it’s also possible to use a stand-up weeder or cutting off the flowerhead.

Make sure to be proactive to prevent future outbreaks by keeping your grass healthy with fertilizer and aeration.