The higher the acetic acid percentage of the vinegar, the deadlier it will be.

Read on to learn a simple and effective vinegar weed killer recipe and tool method for this strong mixture.

Depending on the weed, this can be in the spring or summer.

closeup of dandelions

The Spruce / Sarah Crowley

Perennial Weeds

Perennial weeds, such as dandelions, are not as easy to defeat.

However, while their leaves die back in the winter, they typically live on through their roots.

The plant will weaken and finally die with diligent, repeated applications of the vinegar herbicide.

illustration of how to kill weeds with vinegar

The Spruce

Vinegar typically does topical damage to the weed unless you could apply it directly to the roots.

The high acidic content of herbicidal vinegar could eventually affect stone and other hard materials when regularly reapplied.

Vinegar will be more effective on younger weeds andannual weeds, such as crabgrass.

dandelions

The Spruce / Sarah Crowley

However, even many herbicidal products, including organic ones, need a reapplication.

A sunny period is important.

Rain will wash off the vinegar.

Gardening gloves

The Spruce / Margot Cavin

Wear Protection

Before handling strong vinegar, put on gloves, eye protection, and secure clothing.

A face mask is also highly recommended in case of splashes and spills.

Apply the Mixture

Carefully spray or paint the vinegar onto only the weeds you wish to kill.

Making a vinegar mixture

The Spruce / Adrienne Legault

Do not spray horticultural vinegar on plants if it is breezy or windy outside.

The vinegar can accidentally spray onto other plants and harm them.

spraying weeds with vinegar

The Spruce / Sarah Crowley