Fungus Gnats on Snake Plant – Getting Rid of Larvae, Eggs & Flies

Flying bugs like fungus gnats can make an appearance in or around your snake plants for several reasons although most tend to do with the soil and how well you maintain it. Here are the steps for quickly getting rid of the tiny flies before the infestation becomes an even bigger problem.

Over-watering your snake plants

Over-watering tends to be the main culprit for the development of fungus gnat infestations on snake plants. Fungus gnats and other similar flying bugs love moisture and dampness. Snake plants don’t require excessive moisture to thrive. You are overwatering your plant if the soil remains super soggy and develops tiny puddles of water. The simplest solution to getting rid of fungus gnats on snake plants is to reduce the amount of watering. You only need to water the plant when the top layer of the soil looks dry.

If you are using self-watering pots or automated plant watering systems, you may want to re-configure the frequency of watering the device is set to. These devices add a lot of convenience but can introduce fungus gnat problems as they are designed to keep the soil damp at all time.

Gnats thrive in poor-quality soil

Fungus gnats will also appear around snake plants if the soil quality is poor. You might have brought in snake plants that have been potted in gnat-infested soil. The existing soil may also not be draining well and this adds to the problem we highlighted on over-watering. If you suspect that the soil is the problem then you will need to repot the snake plants in high-quality potting mix that drains well and is free of pests.

Using yellow sticky traps

Placing a few yellow sticky traps around the snake plants may help get rid of adult fungus gnats but they won’t resolve the originating cause of the bug infestation. To completely get rid of the flies around the snake plants, you need to also eradicate the larvae and eggs in the infested soil.

Repotting, however, isn’t an easy step as household plants like snake plants can be quite sensitive to a change in environment and may end up going through transplant shock. Instead of repotting, one alternative method to consider is using mosquito bits. Let it soak in the water used for the snake plants. We would suggest letting the mosquito bits or dunks soak for at least 24 hours in order for this method to be effective.


  • Varshan:

    These bugs are so irritating. One of my snake plant leaves is turning black. Not sure if it’s because of these bugs. help!

  • Joan:

    The gnats haven’t disappeared after I changed the watering schedule. Please help save my snake plant!!

  • Sam:

    @Joan it might be because there are still larvae in the soil of the snake plant container. Have you tried using mosquito bits? I have had some success with it.

  • Garage:

    I rescued an over-watered sansevieria from a store few days ago. I asked the plant nursery what I can do for this snake plant and they said to just let the plant dry out because the roots are relatively undamaged. I’ve done that but the gnats are still appearing. What should I do now?

  • Chasing Plants:

    Please pray for my snake plant. I placed a few yellow traps around the plant and must have caught at least fifty flies by the next morning. I don’t know if I should just give up on the snake plant at this point. I tried everything!!!

Leave a Reply