Organic Weed Control with Vinegar
I've also used regular 5% vinegar with the same effects. 3% vinegar doesn't work as well.
In repeated trials, this burns darn near anything it touches. Some leaves (sumac and aegopodium) burn in spots and are distinctly unhappy but recover. It took me 6 sprays this past summer (7-10 days apart) to kill a section of aegopodium. It turned the ground so acidic, we had moss growing there in the spring.
It is an effective and very low-cost burn spray. It burns what it touches and that includes good stuff and bad stuff. As indicated, repeated sprayings every 7-10 days are needed for perennial plants.
