- Size: small flies, 1/32 to 7/16 inches long. Generally mosquito-like in appearance.
- Color: typically black, brown, or yellowish. Some species have dark colored wings, while others have spotted wings.
Habits of Fungus Gnats, AKA Fungus Flies:
- Larvae develop in a number of habitats, primarily in moist organic matter.
- Breeding sites include rotting wood, animal waste, old mulch, and over-watered plants.
Damage From Fungus Gnats:
- Although they pose no threat to humans, adults can easily become a nuisance indoors.
- Larvae can damage plant roots, resulting in stunted plant growth.
- Resting adults, which may be near breeding sites.
- Moist organic matter, especially over-watered potted plants, which can easily breed large numbers of fungus gnats.
How to Control and Kill Fungus Gnats:
- Allow soil to dry between watering of potted plants to control larvae. Take care not to over-water plants.
- Use clean, pasteurized soil to pot plants and do not bring infested soil indoors.
- Adults can be removed with vacuums, sticky traps, and light traps.