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Since ancient times, vinegar has been used for different purposes like cleaning, cooking, gardening, etc. In gardening, it is used as a herbicide. It is an important element in organic gardening, as it has the capability of killing the weeds. It contains natural acetic acid which helps in destroying the weeds. More the content of acetic acid, more strong is the weed killer. For culinary purposes, the content of acetic acid is merely 5%. The content of acetic acid in regular household vinegar is also 5%. This might work on young weeds but, for killing the mature ones, large amount of vinegar is required.

Another option for killing mature weeds is by repeatedly spraying vinegar having acetic acid with 5% concentration. In order to increase the concentration of acetic acid to 15%, you can distill the vinegar. In order to increase the concentration of acetic acid to 30%, subject the vinegar to freeze evaporation. Acetic acid is biodegradable, and does not cause bioaccumulation. Hence, it does not have a negative effect on the soil.

When vinegar is sprayed on the plants, the pH level of the soil decreases, but within 48 hours the pH level returns to normal. Decomposing plant products under anaerobic conditions can produce vinegar naturally. Most of the time, household vinegar is made from cider, wine, malt, etc. The sugar content present in these products is converted to carbon dioxide and alcohol by the process of fermentation, which is later converted to vinegar by the oxidative process.

However, it is very important to note that the solutions should be sprayed only on the weeds, and not on the surrounding plants in the garden. Spraying it on the plants might kill them. No matter which recipe is being used, it is very important to apply it properly. Spraying the mixture using a spray bottle ensures that you only target the weeds, and not the plants.

Easy Recipes

#1
  • Add soap to full-strength vinegar in the ratio of 1 oz per gallon.
  • Soap helps vinegar stay on the weeds, thus making it a more effective weed killer.
  • It should be remembered that vinegar won't discriminate between weeds and garden plants, and hence should be sprayed strictly on the weeds only.
#2
  • The ingredients required for this recipe are vinegar, salt, soap, and water.
  • To 1 gallon water, add 1 cup of vinegar, 1 cup of salt, and 1 tablespoon of soap.
  • The solution is ready to be sprayed.
#3
  • Take 1 gallon of 10-20% white vinegar (5% vinegar may be sufficient for younger weeds). To this, add 2 ounces of orange oil and 2 ounces of detergent. Stir well.
  • Due to the d-Limonene content of orange oil, combined with vinegar, it becomes an effective weed killer. The detergent helps the solution adhere to the weeds.
  • This recipe will be effective against weeds but ensure that the other plants are protected.
#4
  • The materials you will require are: vinegar, salt, soap, water, and gin.
  • Boil 1 quart water, and add 1 tablespoon of vinegar, 1 teaspoon soap, and 1 teaspoon salt to it.
  • To this mixture, add 1 tablespoon of gin.
  • Now, your mixture is ready to be used for weed control.
The vinegar weed killer recipes mentioned above have proven to be effective, and are easy.