Fungus Gnat

Natural Habitat

Damp soil of houseplants, greenhouses, compost piles, and other environments with consistently moist organic matter.

Diet & Feeding

Adult fungus gnats typically do not feed or feed minimally on liquids. Larvae primarily feed on fungi and decaying organic matter in soil, but can also consume plant roots, especially tender seedlings.

Behavior Patterns

Fungus gnats are typically attracted to damp environments, especially soil with excessive moisture. Adults are weak fliers and often seen hovering near potted plants or windows. Larvae develop in moist organic matter.

Risks & Benefits

Potential risks include damage to plant roots, especially young plants, and being a nuisance due to large numbers of flying adults. They are generally not harmful to humans or pets beyond being an annoyance. In natural ecosystems, they contribute to decomposition.

Identified on: 8/20/2025