Hibiscus Spider Mite Infestation: Integrated Control

Hibiscus Spider Mite Infestation: Integrated Control

A reader’s tropical hibiscus has pinpoint red dots and spiderweb-like webbing on leaves—classic spider mites.

Integrated Pest Management (No Harsh Chemicals)

1. Isolate the plant but keep infested plants clustered (reduces airflow, raises humidity).
2. Raise humidity: Place pots on trays of water; use a humidifier; mist with cold water 2–3 times daily.
3. Shade from afternoon sun—mites love hot, dry conditions.
4. Alcohol spray: 1:1 rubbing alcohol:water (or 1:3). Spray entire plant, especially leaf undersides, every 3 days for 3 weeks consistently to kill hatchlings.

Consistency is critical. Eggs hatch in cycles; missing a treatment restarts the infestation.