Weed Killer?
Answers:
My advice, and I speak as a Licensed Pesticide Applicator and Landscape Supervisor/Designer, don't waste your time on homemade concoctions that may or may not work. Research the various brands online and go get EXACTLY the weed killer you need. Fact is: Different weeds are killed by different poisons. There is no cure-all weed killer "tonic" that works as well as clinically tested and labratory produced herbicides.
Other answers:
Here are two homemade recipes to try. Both should be used only on plants that you want to get rid of, taking care not to spray any on surrounding plants. These are most effective when used on emerging weeds.
1 tablespoon of gin
1 tablespoon of apple cider vinegar
1 teaspoon of liquid dish soap
1 quart of hot water
Alternate version:
1 gallon of distilled vinegar
1 cup of salt
1 tablespoon of liquid dish soap
Spray these directly on weeds in the garden or pour directly into cracks of walks and driveways.
Here are two homemade recipes to try. Both should be used only on plants that you want to get rid of, taking care not to spray any on surrounding plants. These are most effective when used on emerging weeds.
1 tablespoon of gin
1 tablespoon of apple cider vinegar
1 teaspoon of liquid dish soap
1 quart of hot water
Alternate version:
1 gallon of distilled vinegar
1 cup of salt
1 tablespoon of liquid dish soap
Spray these directly on weeds in the garden or pour directly into cracks of walks and driveways.
This "tonic" may have come from Jerry Baker, "America's Master Gardener" - he's got a bunch of tonic recipes for various purposes like greening your lawn, breaking up thatch, discouraging slugs, etc., all made from household ingredients such as dish soap, ammonia, flat beer, tobacco juice, etc. Since you seem to be interested in this, you may want to look up some of his books in the library or at your local book store.