Finding tiny fruit flies, or fungus gnats, loitering just above the surface of potted plant dirt is a common nuisance for indoor gardeners. These pests feed on the decaying organic matter and fungi in potting soil, although they do not cause any damage to plants.
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.
Controlling Houseplant Fruit Flies & Fungus Gnats Naturally. 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. Clean your catch trays. Insert sticky traps into your houseplants.
We show you how to tackle houseplant flies, also known as fungus gnats or sciarid flies.. Keep the trap near soil level, as gnats rarely fly far from the compost.
Small black flies around 2mm long run over the soil surface or fly slowly around houseplants, pot plants and borders. Larvae are small translucent worms, up to .
Houseplant pests are a huge pain for the indoor gardener, and I get asked about. A trend I've noticed is that many, many people confuse soil gnats for fruit flies.