Fungus Gnat

Natural Habitat

Damp, rich organic matter such as potting soil, compost piles, decaying leaves, and areas with high humidity. Often associated with houseplants.

Diet & Feeding

Larvae feed on fungi, decaying plant matter, and sometimes the roots of plants. Adults typically do not feed or feed on liquids.

Behavior Patterns

Adult fungus gnats are weak flyers and are often seen hovering around plants or lights. Larvae live in the soil. They are attracted to moisture and decaying organic material. Their life cycle from egg to adult can be as short as 3-4 weeks.

Risks & Benefits

Potential risks: Larvae can damage plant roots, especially seedlings and young plants, leading to wilting, stunted growth, and even death. They are primarily considered a nuisance pest. Benefits: As decomposers, they play a minor role in breaking down organic matter.

Identified on: 10/6/2025