Pest
Fungus gnats
How to recognise it
Small black gnats above the soil, larvae in moist soil.
What helps
Water less and let the top dry out, yellow sticky stakes, a sand top layer; beneficial nematodes help.
Often a care issue is behind it (watering, light, placement) – the care check in the app helps narrow it down.
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Check a photo – freeTypical organisms: Bradysia difformis, Bradysia impatiens, Lycoriella ingenua