How to Get Rid of Small Flies in Potted Plants

Small flies, also known as fungus gnats, can be a nuisance in potted plants. While they do not harm the plants themselves, their larvae can cause damage to the roots. Here are some effective ways to get rid of small flies in potted plants:

1. Remove Infested Soil and Replace with Fresh Soil

Small flies lay their eggs in moist soil, so removing the top layer of soil and replacing it with fresh soil can help get rid of existing larvae. Make sure to water the new soil sparingly to prevent a moist environment for the flies to return.

2. Use Yellow Sticky Traps

Yellow sticky traps can be found at most garden centers and are an effective way to catch small flies. Hang the traps in the area around the plants and monitor weekly by replacing when full or covered in flies.

3. Water Plants from the Bottom

Fungus gnats thrive in moist soil, so by watering plants from the bottom, the top layer of soil remains dry which reduces the habitat for the small flies to lay their eggs. Place the potted plant on a tray filled with water and allow the plant to absorb water from the bottom.

4. Allow Soil to Dry Out Between Waterings

As mentioned earlier, small flies lay their eggs in moist soil, so allowing the soil to dry out between waterings will help reduce the number of flies. Check the moisture level of the soil by inserting a finger, and only water when the soil feels dry approximately 1 inch below the surface.

5. Try Neem Oil

Neem oil, derived from the neem tree, is a natural insecticide that can help get rid of small flies in potted plants. Mix one tablespoon of neem oil with one gallon of water and apply to the soil and leaves. This method can be repeated weekly until the flies are gone.

In Conclusion

Small flies in potted plants can be a frustrating issue to deal with, but by following these simple steps, you can effectively get rid of them and keep them from returning. By removing infested soil, using sticky traps, watering from the bottom, allowing soil to dry out, and trying neem oil, your potted plants can thrive without the presence of fungus gnats.