understand:
A homemade weed killer can damage desirable plants and soil just as easily as it damages weeds.
Why Vinegar Works on Weeds
Vinegar contains acetic acid.
When it comes into contact with plant tissue, the acid can damage the leaves and cause them to dry out and turn brown.
This makes vinegar-based sprays particularly useful against small, young weeds.
However, vinegar isn’t necessarily a permanent solution.
According to extension guidance, vinegar generally acts on the plant tissue it contacts and may not kill the root system of established weeds.
