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Fungus Gnats on Peace Lilies – Getting Rid of Larvae, Eggs & Flies

Flying bugs like fungus gnats can make an appearance in or around your peace lilies 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 peace lilies

Over-watering tends to be the main culprit for the development of fungus gnat infestations on peace lilies. Fungus gnats and other similar flying bugs love moisture and dampness. Peace lilies 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 peace lilies 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 peace lilies if the soil quality is poor. You might have brought in peace lilies 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 peace lilies 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 peace lilies 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 peace lilies, you need to also eradicate the larvae and eggs in the infested soil.

Repotting, however, isn’t an easy step as household plants like peace lilies 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 peace lilies. We would suggest letting the mosquito bits or dunks soak for at least 24 hours in order for this method to be effective.

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