Many “homemade weed killer” recipes online claim to dry weeds in a few hours, but most do not permanently kill the plant—especially weeds with deep roots. They mainly burn or dehydrate the leaves, and the weeds may grow back.
A common non-chemical approach is:
Vinegar-based spray (for cracks and unwanted vegetation)
Ingredients:
- 1 gallon (about 3.8 L) white vinegar
- A few tablespoons of dish soap (helps the liquid stick to leaves)
How it works:
- The vinegar’s acidity can damage leaf tissue.
- The soap helps coat the plant surface.
Important cautions:
- Use it only where you don’t want plants to grow (such as driveway cracks or paths). It can harm grass, flowers, vegetables, and other desirable plants.
- Household vinegar is often not strong enough for tough, established weeds.
- Avoid adding salt—salt can damage soil and make it difficult for plants to grow there for a long time.
For longer-lasting weed control without herbicides:
