Claims like “this burns weeds in 1 day and they never grow again” are common online, but most homemade weed killers do not permanently stop weeds from returning. Many only kill the leaves above ground; the roots remain alive and weeds can regrow.
A few approaches:
- Boiling water: Can kill small weeds by damaging the plant tissue, especially in cracks and gravel areas. It usually won’t prevent future growth.
- Vinegar-based sprays: Strong horticultural vinegar can burn foliage quickly, but regular household vinegar often isn’t enough for tough weeds, and roots may survive.
- Salt mixtures: Salt can kill plants and may prevent growth for a while, but it can also damage soil, nearby plants, lawns, and affect future gardening. Use caution.
- Mulch or landscape fabric: These are better for preventing weeds long-term because they block light and reduce new growth.
If you tell me where the weeds are growing (lawn, driveway cracks, garden beds, gravel, etc.), I can suggest the safest effective method for that spot.
