Eliminate fungus gnat larvae: the larvae damage roots — treat with BTI solution, nematodes (Steinernema feltiae) and keep substrate dry on top.
Adult fungus gnats are harmless, larvae feed on roots. Prevention: Allow top layer of soil to dry, sand mulch, yellow traps. Control: Water with Bacillus thuringiensis israelensis (BTI), use nematodes (Steinernema feltiae). Water management is crucial - avoid waterlogging. Pot quarantine for new acquisitions.
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