If you mean a homemade weed killer for paths, driveways, or cracks, there are a few simple options—but it’s important to be realistic: home mixes can kill small weeds and young growth, but they’re usually less effective than commercial herbicides and often need repeated application.
Also, anything strong enough to kill weeds can also damage nearby plants and soil life.
🌿 1. Vinegar-based herbicide (most common)
white vinegar
How it works: acetic acid dries out plant leaves.
Simple mix:
- 1 liter white vinegar (preferably 10–20% acetic acid if available)
- 1–2 tablespoons dish soap (helps it stick to leaves)
How to use:
- Spray directly on weeds on a hot, sunny day
- Avoid grass or plants you want to keep
- Repeat after a few days if needed
Best for: small weeds, cracks in pavement
Limit: does not fully kill deep roots in tough weeds
🧂 2. Salt solution (use with caution)
table salt
How it works: dehydrates plants and disrupts soil balance.
Mix:
- 1 cup salt
- 2 cups hot water
- Optional: a little dish soap
Warning:
- Can make soil infertile for a long time
- Should only be used in non-plant areas (driveways, gravel)
🔥 3. Boiling water (simplest method)
water
How it works: destroys plant cells instantly.
How to use:
- Pour directly on weeds (especially cracks and edges)
Best for:
- Immediate kill of small weeds
- No chemicals involved
Limit:
- No root prevention, weeds may regrow
🍋 4. Vinegar + salt + soap (strongest DIY mix)
- 1 liter vinegar
- 2–3 tablespoons salt
- 1 tablespoon dish soap
This is the most aggressive homemade option, but:
- It can sterilize soil in the sprayed area
- Should be used carefully and locally
⚠️ Important safety notes
- Do NOT spray near vegetables, flowers, or lawns
- Avoid inhaling mist
- Keep away from pets and children until dry
- Don’t mix randomly with other chemicals (can be unsafe)
🌱 Reality check
Homemade herbicides:
- ✔ good for small, visible weeds
- ✔ cheap and easy
- ❌ not as strong as commercial herbicides
- ❌ often require repeat use
✔️ Bottom line
The most practical DIY options are:
- vinegar + soap (most balanced)
- boiling water (safest)
- salt solution (strong but risky for soil)
If you tell me where the weeds are (lawn, tiles, garden, cracks), I can suggest the best specific method without damaging surrounding plants.
