How to Kill Weeds with Vinegar: Quick and Easy Homemade Mixture

May 03, 2024

Enter your email in the box below to get the most mind-blowing animal stories and videos delivered directly to your inbox every day.

Having to pull weeds can find even the most enthusiastic gardener wishing they could take a nap instead. Moreover, the idea of adding toxic herbicides to the soil in order to beautify the landscape makes many of us cringe. Lucky for home gardeners, weed control can be as easy as harnessing the power of vinegar. And learning how to kill weeds with vinegar involves making a quick and easy homemade mixture you can whip up in minutes.

Vinegar’s high acidity is what makes it a powerful weed killer. The acetic acid in vinegar is able to break down a plant’s cell walls (especially when paired with salt) and prevents them from holding moisture. These actions eventually kill the plant within a couple of days when using household vinegar as a weed killer.

So let’s make a batch of non-toxic vinegar weed killer together, shall we? Keep reading for tips on how to prepare and apply a homemade vinegar-based weed killer with simple steps. Be sure to read our final recommendations for properly handling and storing vinegar weed killer and how to use it for weed control maintenance.

©iStock.com/Michelle Lee Photography

Creating your own non-toxic weed killer is a straightforward process that requires only a few simple ingredients and materials. Follow the easy steps listed below to prepare your homemade vinegar mixture.

For this vinegar weed-killer recipe, you’ll need just three ingredients:

Why these ingredients? The vinegar and salt work together to kill plant cells, while the dish soap helps the mixture stick to the plant’s surface.

You will also need the following materials:

Before mixing the vinegar, salt, and dish soap together, be sure to wear protective clothing. The acid in vinegar can cause mild skin irritation, and the fumes might irritate your nose, mouth, and eyes. So wear long pants and sleeves and protective gloves. Consider also wearing a face mask and goggles as an added precaution.

Mix the white vinegar, salt, and dish soap in your chosen container. Stir or shake it (with the container lid tightly fastened) until combined.

Raise the weed-killing potential of your vinegar mixture by letting it sit for an hour before use. This period will allow the ingredients to integrate inside the spray bottle fully. Then give the tightly-closed bottle another good shake before applying the mixture to the pesky weeds in your yard or garden.

©encierro/Shutterstock.com

Now that you have your homemade vinegar-based weed killer ready to go, it’s essential to apply it correctly. The best application practices will help ensure proper absorption and prevent unintentionally killing other plants you intend to keep!

Here are a few best practices for vinegar weed-killer application:

Choose the Best Weather: The best time to apply the vinegar weed killer is on a warm, sunny day. Avoid using this solution on windy days to prevent the spray from drifting onto other plants. Also, avoid applying this solution to weeds on rainy days to prevent diluting the mixture or decreasing its ability to absorb.

Target the Leaves: The best place for a weed to absorb the mixture is through its leaves. So target the plant foliage with your weed-killer spray to maximize its potency. Aim directly at the leaves and thoroughly coat them. Its leaves will absorb and transport the solution to the plant’s roots.

Be Careful: Only spray the weeds you want to kill. Do not get this solution on any other plants. If necessary, with gloved hands, move the weed foliage away from the plants you want to keep before spraying. Keep in mind that vinegar weed killers can kill your grass, flowers, and garden vegetables too.

Be Patient: Vinegar-based weed killers may take a few days to kill the sprayed weeds completely. Be patient, and wait to reapply more of the solution to any plants. Give your vinegar mixture time to work well before deciding if a second application is necessary.

©Niliane Fatima Pierok/Shutterstock.com

Killing weeds with a homemade vinegar mixture can be an effective and eco-friendly solution. However, it’s also essential to handle this natural herbicide with care.

Follow these quick tips for safely handling and storing vinegar weed killer:

©larisa Stefanjuk/Shutterstock.com

The weeds you kill with vinegar are hopefully gone for good, but soon there will be more to replace them. It’s important to have a follow-up maintenance strategy to ensure long-term results.

Consider these tips to keep the weeds from taking over your property again:

Add Mulch: Mulching your garden beds helps suppress weed growth by blocking sunlight from getting where weed seeds are lurking in the soil. As a result, most weed seeds won’t germinate. You can achieve this same effect by adding landscape fabric over the soil, too.

Apply Vinegar Weed-Killer to New Weed Growth: This tip is obvious, but it requires keeping watch for those new weeds to sprout and then taking immediate action. The sooner you spray those young weeds, the less chance you’ll end up with a garden bed that looks like an abandoned field.

Use Organic Fertilizer on Your Lawn: Did you know that fertilizing your lawn can help keep it from filling with weeds? It’s true! The reason this works is because most lawn fertilizers contain nitrogen, which is a nutrient vital for the health of the grass. However, many plants you’d consider weeds don’t thrive in nitrogen-rich soils. So a fertilized lawn sends more weeds packing and keeps them from coming back.

©Aleksey Matrenin/Shutterstock.com

While the vinegar solution is an effective, non-toxic option, it’s not the only natural method for controlling unwanted weeds. Here are two additional eco-friendly approaches to weed control:

Apply Boiling Water: Heat water in your tea kettle and pour it over the weeds you want to kill. The boiling water scalds the plants, which die back in a few days. This method works really well for isolated weeds and any plants growing through pavement cracks.

Use Vodka Instead of Vinegar: Applying a vodka solution with water and dish soap to weeds can also cause their demise. However, that’s a more expensive way to go. For this solution, add 2 ½ tablespoons of cheap vodka to two cups of water and a teaspoon of dishwashing liquid soap. Or double the vodka mixture recipe for a larger batch. Then apply it in the same fashion as a vinegar mixture to the weeds you want to conquer.

©KRIACHKO OLEKSII/Shutterstock.com

While the fight to eliminate weeds is understandable, some weeds have more value alive than dead. So before reaching for the vinegar weed killer, think twice before killing these plants:

Clover: Clover plants are nitrogen fixers for your yard. They contribute to soil fertility and attract pollinators to the plants you love.

Dandelion: Did you know that dandelions provide food for bees and other pollinators? Indeed they do. Plus, their roots add nutrients to the soil and help aerate it due to how far they spread underground. Try to think of dandelions as free fertilizer so you won’t mind as much seeing them pop up all over the place.

Ground Ivy (Wild Mint): This creeping “weed” can take over your lawn, but think twice before killing every patch of ground ivy you find. You will want to control ground ivy plants, but maybe let some grow with supervision around your vegetable garden. The reason ground ivy could be beneficial in this location is because of its ability to repel certain garden pests. Cabbage and cucumber worms, tomato hornworms, and other garden pests avoid ground ivy because of its volatile oils. However, ground ivy is toxic if ingested, so don’t let this plant grow where livestock graze.

©ronstik/Shutterstock.com

Using a homemade vinegar mixture for weed control is a safe and effective method for lawn and garden care. Though a mild irritant due to its acidity, vinegar is non-toxic and eco-friendly. And its acidity is why vinegar works so well at sending unwanted weeds to their graves.

By following the step-by-step instructions and best practices for application, you can harness the power of vinegar to keep your garden thriving. With these easy practices in place, you can maintain a beautiful yard and garden that flourishes year after year.

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.