A mixture of vinegar and clove oil is very effective in removing weeds. To prepare this mixture, take a container of five litre capacity, and mix 600 ml clove oil with 2.5 litre of 20% strong vinegar. Fill the rest of the container with clean water. You can also substitute vinegar with citric acid. Add around 500 g citric acid to make a 5 litre solution.
Mix the solution so that it becomes homogenous. You can store this solution in a container with tightly closed lid. To use, take around 1 litre of solution in a garden sprayer and spray at the roots of the weeds. The strong active elements in the solution burn and kill the weeds. The solution also sterilises the soil. This will ensure that your stone driveway is free of weeds for several months.
Before you use the organic solution, conduct a spot test to ensure that the vinegar does not bleach the stone paver. Spray diluted vinegar on an inconspicuous 2’ x 2’ patch on your stone paver. Wait for a few hours and check for any discoloration on the stone paver. If you don’t see any difference on the paver, you can do ahead with the treatment.