How to Get Rid of Earthworms in Potted Plants

Earthworms are a useful addition to garden soil, but they can become a nuisance when they start to invade potted plants. These wiggly creatures can make the potting mix too dense and compact, depriving the plants of air and water. Earthworms also leave behind their waste, which can contain harmful bacteria and microbes. If you see earthworms in your potted plants, it’s time to get rid of them. Here’s how:

1. Use a natural repellent

The easiest way to get rid of earthworms in potted plants is to use a natural repellent. Sprinkle a bit of cinnamon, garlic cloves or coffee grounds on top of the soil to deter earthworms from burrowing. These ingredients have a strong smell that earthworms dislike, so they’ll usually stay away. You can also use neem oil or vinegar diluted in water as a spray to repel earthworms. Be sure to apply these natural repellents to the top layer of soil, as they may affect the growth of plant roots if applied too close to them.

2. Water less frequently

If you’re overwatering your potted plants, you may be creating an ideal habitat for earthworms. These creatures thrive in moist soil, and if there’s too much water, they may come to the surface in search of oxygen. By reducing the frequency of watering, you can create a less hospitable environment for earthworms. Make sure the soil is slightly dry before watering again, and be mindful of the drainage holes in the pot. If excess water is draining too slowly, the potting mix may be too dense and needs to be loosened up.

3. Add some grit or sand

Earthworms don’t like to crawl over rough or gritty surfaces, so adding some grit or sand to the top layer of soil can prevent them from burrowing. You can use sand, perlite or vermiculite to create a rough texture on the soil. You can also mix some diatomaceous earth into the soil. This powdery substance contains microscopic particles that can puncture the skin of earthworms and cause dehydration, leading to their demise. However, be careful not to use too much diatomaceous earth, as it can harm other soil-dwelling organisms that are beneficial to the plant.

4. Repot the plant

If all else fails, you may need to repot the plant. Take the plant out of its current pot and gently remove as much of the potting mix as possible. Look for any earthworms and remove them manually. If the potting mix is too dense, you can mix in some perlite or vermiculite to create a more aerated mix. Once the new potting mix is ready, put the plant into a new pot and water it thoroughly. This should ensure a fresh start for the plant and keep it earthworm-free.

Remember that earthworms play an important role in the soil by improving its structure, aerating it and breaking down organic matter. However, if they start to invade your potted plants, it’s important to take action to keep them from harming your plant. By using natural repellents, watering less frequently, adding some grit or sand, or repotting the plant, you can get rid of earthworms and keep your plants healthy and thriving.