That’s one of those “grandma hacks” that can work—but with limits and some risks.
Most DIY weed-killer recipes are based on a mix of household ingredients, usually:
🌿 Common DIY weed killer recipe
- Vinegar (acetic acid)
- Salt
- Dish soap
How it works:
- Vinegar burns the leaves (especially in sunlight)
- Salt dehydrates the plant and soil
- Soap helps the mixture stick to leaves
⚠️ The important reality check
It’s not a perfect solution:
- Kills only the top (leaves), not always the roots
- Weeds can grow back
- Salt can damage soil long-term, making it hard to grow anything later
- Can harm nearby plants if sprayed carelessly
🌱 When it works best
- Small weeds
- Young plants
- Cracks in pavement or driveways (not garden beds)
🚫 When NOT to use it
- In vegetable gardens
- Near healthy plants you want to keep
- On large or deep-rooted weeds
🧠 Safer alternatives
- Pull weeds by hand (most effective long-term)
- Mulching to block sunlight
- Boiling water (kills surface weeds without chemicals)
🧾 Bottom line
DIY weed killer can be useful for quick, surface-level control, but it’s not a permanent or soil-friendly solution.
If you want, I can give you:
- a safer version of the recipe
- or methods that actually kill weeds from the root permanently
- or what farmers and gardeners use instead
