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Pests
Fungus Gnats in ZZ Plant Soil
Commonly affects: Zamioculcas zamiifolia (ZZ Plant)
Small dark flies hover around the plant and soil surface, thriving in consistently moist potting mix.
Potential Causes
- 1Overly moist potting mix, often from overwatering a plant with substantial built-in drought tolerance
- 2Organic matter in the mix breaking down and attracting egg-laying adults
Solution Steps
- 1Allow the soil to dry out completely between waterings, which ZZ Plant tolerates well
- 2Use yellow sticky traps to catch and monitor adult gnats
- 3Apply a BTI product to the soil if a persistent infestation continues despite drier watering habits
- 4Use a mix with more perlite or grit for better drainage
Prevention Tip
Fungus gnats on a ZZ Plant are almost always a sign of overwatering â correcting watering frequency usually resolves it without pesticide.
