Fungus gnats lay their eggs in moist soil where the larvae will hatch and feed on small roots, fungus and other organic matter in the soil. They have no interest in fruit. If you see tiny black bugs in plant soil, and flying around your plants â€“ those are fungus gnats.
These pests feed on the decaying organic matter and fungi in potting soil,. Black Flies in Houseplant Soil; 4 Kill Fungus Gnats in Houseplants with Dish Soap.
Add a thin layer of pebbles (pretty!) or gravel or GrowStone Gnat Nix to the top of the potting soil in your indoor plant containers. Fungus gnats lay eggs in the top layer of the soil and hatch from there. They can't do this in pebbles. Clean your catch trays.
Fungus gnats are tiny flies that hover around houseplants. Get rid of the problematic larvae, with our practical guide from BBC Gardeners' World Magazine.
Known as fungus gnats, they are actually small flies, about 1/8-inch long, that are drawn to moist potting soil and decaying plant material at the base of houseplants.. Fungus gnats lay eggs in the houseplant soil. The eggs become larvae, which feed on fungi in the soil of plants, hence their name.
Soil gnats look similar to fruit flies, and they are just as annoying. But those aren't fruit flies buzzing around your houseplants all winter long, they are soil gnats.