Claims like “This burns weeds in 1 day and they never grow again!” are usually exaggerated.
Some homemade weed killers can cause visible wilting within a day, but permanently preventing regrowth is much harder, especially for perennial weeds with deep roots.
Common homemade weed killers
Vinegar
- Household vinegar can burn the leaves of young weeds.
- Stronger horticultural vinegar is more effective but can cause skin and eye injuries.
- Often kills top growth rather than the root, so many weeds return.
Salt
- Salt can kill plants by dehydrating them.
- It can also damage soil and make it difficult to grow desirable plants in the same area.
- Not recommended for garden beds.
Boiling Water
- Effective for weeds growing in sidewalk cracks or driveways.
- Usually kills the exposed parts of the plant but may not eliminate deep-rooted weeds.
Why weeds come back
Many weeds spread through:
- Deep root systems
- Rhizomes (underground stems)
- Seeds that remain viable in the soil for years
Examples include:
- Dandelion
- Bermuda Grass
- Bindweed
These often regrow unless the roots are removed or repeatedly weakened over time.
What works best long-term?
- Pulling weeds before they set seed
- Mulching to block sunlight
- Landscape fabric where appropriate
- Repeated treatment of persistent weeds
- Targeted herbicides used according to label directions when necessary
If you tell me which weed you’re trying to eliminate (or upload a photo), I can suggest the most effective long-term control method.
