20 Benefits and Uses for Vinegar in the Garden

Vinegar is one of the most versatile household products for gardeners.

It can be used in homemade weed killers, fruit fly traps, and cleaning solutions for garden tools. Plus, it helps remove stubborn mineral deposits.

When diluted and used carefully, vinegar can be a useful gardening aid while reducing the risk of damage to desirable plants.

20 Ways to Use Vinegar in the Garden

This household product can help repel and even kill many insects. It is also useful in other ways around the garden and home.

1. Get Rid of Fruit Flies

Fruit flies can be very pesky, attacking a wide range of fruit and vegetable crops and even invading your house. However, you can easily and inexpensively create a DIY fruit fly trap using vinegar.

Just add a few drops of dish soap to a small bowl of vinegar. Let it stay uncovered for the flies to come in.

The soap lowers the solution’s surface tension, causing the flies to sink, and the vinegar kills them. This bait may also help trap adult fungus gnats, but does not eliminate infestations.

2. Keep Some Animals Away

Soak rags or cotton balls in apple cider vinegar. Then, place them around your crops or flowers to help keep pets and other animals away.

The strong odor may temporarily deter some animals, although effectiveness varies widely.

3. Clean Rusty Garden Tools

White vinegar is an effective rust remover [1].

To clean rusty garden tools, soak them in vinegar overnight. The next day, use steel wool or something similar to rub off the rust.

However, for severely rusted tools, add a pinch of salt to the vinegar. For every liter of vinegar, add a quarter cup of salt.

4. Repel Ants

Fire ants, like other ants, can become a problem in the garden. They can also be a nuisance around the patio and invade your home.

However, a vinegar solution can help repel ants from areas around the home and garden.

Just combine 1 part white vinegar with 1 part water. Next, spray this natural repellent on anthills and trails around the house and garden.

5. Kill Weeds and Grass

Vinegar is a tried-and-true natural remedy for ridding the garden of weeds, and it can also kill grass.

To kill weeds with vinegar, combine two tablespoons of dish soap, 1 gallon of 20% horticultural vinegar, and two tablespoons of orange oil. This makes a strong homemade weed killer.

Next, use a spray bottle to mist the solution over the weeds and grass you want to eliminate.

Safety note: Use gloves and eye protection. This 20% vinegar can burn skin and will kill any plant it touches.

6. Remove Sap and Sticky Residue from Tools

Pruning shears, loppers, and other cutting tools can get sticky from sap and plant residue after use.

To clean them, dampen a cloth with white vinegar and wipe the affected areas. For stubborn buildup, soak the tool heads in vinegar for 15 to 30 minutes before scrubbing gently.

Removing sap and residue helps keep tools clean and can make cutting more efficient during future gardening tasks.

7. Clean Clay Pots

The salts and minerals in water or fertilizer can seep through clay pots, leaving an unsightly white residue over time. Mold also grows in terracotta pots.

To clean these pots, soak them overnight in a mixture of one part water and one part white household vinegar. Next, use a scrub brush to remove the residue.

8. Get Rid of Slugs and Snails

Another effective way to use vinegar in the garden is to control slugs and snails.

To kill slugs and snails, mix one cup of plain white vinegar with one cup of water and spray it directly on the pests.

However, be careful with this homemade organic pesticide, as it can damage certain crops. Apply directly to pests only—avoid spraying plants or soil.

9. Clean Plant Leaves

Dirty leaves can block sunlight [2], affecting photosynthesis and natural plant growth. However, you can use vinegar to clean plant leaves.

Combine a teaspoon of vinegar with a gallon of water and test it on a small leaf first. Avoid using vinegar on delicate or sensitive plants. Alternatively, plain water is often sufficient for removing dust from plant leaves.

This remedy works well for indoor and greenhouse plants.

10. General Pest Control Spray

You can also make a homemade vinegar spray for plants to deter harmful insects and related garden pests.

For the recipe, you’ll need 1 part vinegar, 3 parts water, and 1 teaspoon of organic liquid soap. Combine these ingredients with a gallon of water and add them to a spray bottle.

This vinegar solution is not strong enough to kill plant bugs and pests, but it will repel them.

Some gardeners apply diluted vinegar sprays to keep certain pests away. But the success of this method can vary depending on the type of insect and the surrounding environment.

Spray it in and around your garden. You can also use it raw (undiluted) to kill spotted lanternflies and Asian jumping worms if they are not on or near delicate plants.

11. Boost Acid-Loving Plants

Some gardeners use diluted vinegar to temporarily lower soil pH around acid-loving plants.

However, the effect is short-lived. Sulfur-based soil amendments are generally more effective for long-term pH adjustment.

To make the solution, combine 1 cup of white household vinegar with 1 gallon of water. Then apply it to the soil around acid-loving plants, such as azaleas, camellias, gardenias, and some hydrangeas.

12. Remove Hard Water Stains from Garden Equipment

Hard water can leave white, chalky deposits on watering cans, hoses, sprayers, and other garden equipment. Over time, these mineral deposits can affect appearance and performance.

To remove them, mix equal parts white vinegar and water. Soak smaller items in the solution or apply it with a cloth to larger surfaces. Let it sit for 15 to 30 minutes before scrubbing and rinsing thoroughly.

This simple cleaning method helps keep garden tools and equipment looking and functioning at their best.

13. Test the Soil for Alkalinity

There is no need to buy a soil pH test kit to test whether your soil is alkaline.

Add 1/2 cup of white vinegar to 1 cup of garden soil in a container. If it begins to fizz, the soil likely contains calcium carbonate (lime). This often indicates alkaline conditions in the soil.

However, this is only a rough test and does not provide an exact soil pH reading.

14. Clean and Wash Vegetables

Soaking freshly picked crops in a vinegar-and-water mixture can help remove dirt and reduce the number of some surface bacteria. Scrub off any remaining dirt, rinse, and dry.

The solution will also give your fruits or vegetables a clean shine.

15. Clean Garden Harvest Baskets and Containers

Harvest baskets, buckets, and storage containers collect dirt, plant residue, and odors over the growing season.

To clean them, combine one part white vinegar with one part water. Use the solution to wipe or scrub the containers. Then, rinse thoroughly and allow them to dry completely before reuse.

Regular cleaning helps maintain a more hygienic environment for harvested fruits and vegetables.

16. Treatment for Root-Knot Nematodes

Limited research suggests that wood vinegar may help reduce populations of plant-parasitic nematodes [3]. However, results can vary, and you should not consider it a guaranteed solution.

To give it a try, mix 10 mL of wood vinegar with 1 L of water, then apply it to the soil.

17. Clean Birdbath

To freshen and clean the birdbath, mix one part white vinegar with nine parts water.

Next, apply the solution to the target container and leave it to soak for a while. Finally, scrub thoroughly to remove dirt and algae.

18. Keep Cut Flowers Fresh Longer

A mixture of vinegar and sugar can help cut flowers stay fresh longer than plain water alone.

Combine two tablespoons of vinegar, one tablespoon of sugar, and 1 quart of warm water. Next, add the solution to a vase and put your flowers in it.

19. Clean Garden Walkways

Over time, limestone pavers and brick walkways can accumulate calcium and mineral deposits.

However, vinegar can help with that. Mix equal parts of vinegar and water, and apply it to the affected area. This will loosen the deposits, allowing you to scrub them off afterward.

20. Clean Hands

Even with gardening gloves, hands can get dirty after working in the garden or stained from fruit picking.

However, adding a few tablespoons of apple cider vinegar to a bowl of warm water can help loosen dirt and remove some stains from your hands.

Caution

Vinegar is acidic and can damage plants, soil balance, and beneficial insects if overused.

Avoid spraying it on plants you want to keep unless the recipe says to. Even when diluted, vinegar can damage the leaves.

Takeaway

Vinegar is a versatile household product.

It serves many purposes in the garden, like trapping fruit flies, repelling certain pests, and cleaning tools, pots, and garden equipment. It can also be used to kill weeds, remove mineral deposits, and freshen harvested produce.

However, vinegar should always be used with care. Since it is acidic, it can harm desirable plants if applied excessively or incorrectly.

For the best results, use the recommended dilutions. Avoid spraying valuable plants unless specifically directed. Also, test homemade solutions on a small area first to check for any negative effects.

When used responsibly, vinegar can be an inexpensive and eco-friendly addition to your gardening toolkit.