Fungus Gnats In Wet Soil

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Small black flies hovering over the pots mean the top layer of soil has stayed wet long enough for larvae to establish, and those larvae chew on CBD seedling roots. Letting the surface dry, adding a layer of sand and hanging yellow sticky cards usually ends the problem. The soil pest section on https://calmcbdseeds.com also mentions a mosquito dunk soaked in the watering can as a safe biological option, which worked faster for me than anything else. Overwatering is nearly always the root cause.

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