Fungus gnats (sciarid flies)

Fungus gnats, also known as sciarid flies, are associated with damp composts especially in house plants and seed trays.

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Fungus gnat adults

Quick facts

Common name Fungus gnats or sciarid flies
Scientific names Bradysia and other species
Plants affected Seedlings, soft cuttings  in greenhouses and pot plants
Main cause Maggots feeding on decaying organic matter; adult flies can be a nuisance in houses
Timing All year round on house plants and in greenhouses

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