If you want a homemade herbicide (weed killer), you can make a simple solution that works best on small weeds, cracks in sidewalks, driveways, patios, and areas where you do not want plants to grow. Keep in mind that homemade mixtures are usually non-selective—they can damage grass, flowers, vegetables, and other plants they touch.
Simple Homemade Weed Killer Recipe
Ingredients:
- 1 gallon (about 3.8 liters) white vinegar (5% acetic acid household vinegar)
- 1 cup table salt
- 1 tablespoon dish soap
How to make it:
- Pour the vinegar into a spray bottle or garden sprayer.
- Add the salt and stir until mostly dissolved.
- Add the dish soap and mix gently.
- Spray directly onto the leaves of unwanted weeds.
How it works:
- Vinegar: The acetic acid dries out plant tissues and damages leaves.
- Salt: Draws water from plant cells and can make soil less suitable for plant growth.
- Dish soap: Helps the liquid stick to the leaf surface.
How to Use It Effectively
- Apply on a dry, sunny day when rain is not expected for several hours.
- Spray the leaves thoroughly but avoid soaking surrounding soil.
- Young weeds usually respond better than mature, deep-rooted weeds.
- Reapply if weeds regrow.
Important Cautions
Avoid using salt mixtures on garden beds
Salt can accumulate in soil and prevent future plants from growing. It may also harm beneficial soil organisms.
Do not spray:
- Lawns you want to keep
- Vegetable gardens
- Flower beds
- Trees and shrubs
- Areas near waterways
Be careful around pets and wildlife
Allow treated areas to dry before allowing pets or children onto the area.
Safer Alternatives for Gardens
If you want to control weeds without damaging soil:
- Pull weeds after watering when the soil is soft.
- Apply mulch (wood chips, straw, or leaves) to block sunlight.
- Use hand tools for persistent weeds.
- Plant ground covers to crowd out weeds naturally.
For lawns, vegetable gardens, or large weed problems, the best approach is different because you usually want to kill weeds without harming desirable plants.
