Many products and homemade remedies are advertised with claims like “burns weeds in 1 day” or “they never grow again.” In reality, no weed treatment permanently prevents all regrowth, especially for perennial weeds with deep roots.
Here are some effective approaches:
For quick results
- Boiling water: Can kill small weeds in cracks and between paving stones. Avoid using it near desirable plants.
- Herbicidal soap or contact herbicides: These damage the leaves quickly, but perennial weeds may regrow from their roots.
- Commercial herbicides: Products containing ingredients such as Glyphosate can kill many weeds down to the roots when used according to the label. Some tough weeds may require repeat treatment.
To reduce regrowth
- Pull weeds out by the roots when the soil is moist.
- Apply mulch (5–10 cm or 2–4 inches) around garden plants to block sunlight and suppress new weeds.
- Remove weeds before they produce seeds.
- For driveways and paths, regularly removing new seedlings prevents them from becoming established.
Avoid common myths
Household mixtures such as vinegar, salt, and dish soap may burn the tops of weeds, but:
- They often do not kill the roots of perennial weeds.
- Salt can remain in the soil and harm nearby plants or make the soil unsuitable for future planting.
- Vinegar solutions strong enough to be effective can irritate the skin and eyes.
For the best long-term control, choose a method that’s appropriate for the type of weed and the area where it’s growing, and follow any product directions carefully to protect yourself, nearby plants, pets, and the environment.
