Although we rocked the entire area that the garden beds sit on, we did not put landscape cloth under all of that rock. Weeds have popped up throughout the rocked area. I found a natural remedy to remove the weeds. We treat the area every other week with this natural recipe.
In a 2-gallon garden sprayer combine my two new best friends:
1 gallon white vinegar 1 cup of table salt
Add two tablespoons of dishwashing liquid and shake to mix. Spray directly on the weeds. In a day the weeds will turn brown and die.
I am told that the salt will eventually prevent anything from growing in the area in the future. Do not spray this mixture anywhere that you may want something to grow.