Eliminating Fungus Gnats on Indoor Hibiscus: Repotting and Insecticidal Soap

Black Flies = Fungus Gnats from Nursery Soil

Hibiscus in original nursery pot with black flying bugs: the soil is the source. Repot into larger container with fresh potting mix. Spray foliage with insecticidal soap to kill adults.

Why Nursery Pots Fail

Black plastic pots are for transit, not permanent use. Soil breaks down, holds water, breeds gnats. Repotting solves 90% of indoor pest issues.