If you want a DIY weed killer, consider the following:
- Boiling water or laying down newspaper are safe options if you don’t want to alter the soil.
- High-acidity vinegar is effective but may reduce the soil’s pH and should be used with care.
- Salt works as a weed killer on its own or can be combined with other weed killers to prevent weeds from returning, but it should never be used in areas where you’ll want to grow plants in the future.
Not everyone has the time to spend pulling up weeds by hand, and it can be a struggle to find eco-friendly weed killer in shops. Sometimes, all you need is a good homemade weed killer recipe. Homemade weed killer often doesn’t last as long as tugging weeds up by the roots, but it can be a real time saver if you have a lot of ground to cover.
Homemade weed killer: tips and warnings
- Whatever your weed killer, use it on a dry, sunny day. It’ll increase the effect and help to avoid the substance being washed away by rain.
- Don’t use weed killer in high winds, or it might end up being blown into areas you weren’t planning to use it.
- Acidic weed killers, such as vinegar and lemon juice, can increase the acidity of the soil, making it easier to grow certain plants and harder to grow others. It may be safest to avoid these if your plants require alkaline soil.
- Never leave dangerous substances, such as high-acidity vinegar, unattended around pets or small children.
- Humans are the only weed killer that can tell the difference between weeds and plants you want to keep. If you want to deal with weeds that are surrounded by flowers, it’s best to attack them with your hands or a trowel.
DIY weed killer isn’t the only horticultural helper you can make yourself. Check out our guide to how to make natural pesticides at home.