Claims like “This burns weeds in 1 day! They NEVER grow again” are usually exaggerated.
Many homemade weed killers can burn the visible parts of weeds quickly, but very few prevent weeds from ever coming back, especially perennial weeds with deep root systems.
Common weed-killing methods
Boiling water
- Can kill small weeds by damaging plant tissues.
- Works best on weeds growing in cracks or between paving stones.
- May not kill deep roots.
Vinegar-based sprays
- Household vinegar can burn leaves on contact.
- Often effective on young weeds.
- Mature weeds frequently regrow because the roots survive.
Hand pulling
- Most effective when the entire root system is removed.
- Especially important for perennial weeds.
Mulch and ground covers
- Help prevent new weeds from germinating.
- Often more effective long-term than spraying.
Why “never grow again” is usually false
Weeds can return because:
- Roots remain alive underground.
- Seeds already in the soil germinate later.
- New seeds blow in from surrounding areas.
Be cautious with viral recipes
Some online weed-killer recipes contain large amounts of salt. Salt can damage soil and make it difficult for desirable plants to grow later.
Bottom line
A product or homemade spray may kill visible weeds within a day, but permanently eliminating weeds usually requires removing roots, preventing new seeds from germinating, and ongoing maintenance. The promise that weeds will “never grow again” is rarely realistic.
