Headlines like “THIS burns weeds in 1 day! They NEVER grow again” are usually exaggerated.
Many homemade weed killers—often made with vinegar, salt, or dish soap—can cause weeds to wilt or die back quickly, sometimes within a day. However, very few treatments guarantee that weeds will never return, especially if roots or seeds remain in the soil.
Common DIY weed-killer recipe
A frequently shared mixture is:
- White vinegar
- A small amount of dish soap
The vinegar can damage the leaves, while the soap helps the solution stick to the plant.
Why “never grow again” is misleading
- Many weeds regrow from roots that survive.
- Seeds already in the soil can sprout later.
- Perennial weeds are especially difficult to eliminate permanently.
What works best for long-term control
- Pulling weeds, including as much of the root as possible.
- Applying mulch to block sunlight.
- Maintaining healthy, dense lawn or garden plants.
- Repeated treatment of persistent weeds.
Be careful with salt
Some viral recipes add large amounts of salt. While salt can kill plants, it can also:
- Damage nearby desirable plants.
- Persist in the soil.
- Make it difficult to grow anything in that area for a long time.
Bottom line
A vinegar-based spray may burn the visible parts of some weeds within a day, but claims that they will “never grow again” are generally unrealistic. Long-term weed control usually requires a combination of removal, prevention, and ongoing maintenance.
