Gardenia Mealybug Infestation: Identification and Safe Control

My gardenia has white mold on branches, leaf drop, and branch dieback. Initially thought powdery mildew, but now suspect mealybugs. How to handle?

Mealybug ID

• Cottony white masses in leaf axils, branch crotches, undersides
• Pinkish soft bodies under wax
• Sticky honeydew → sooty mold
• Slow reproducers—controllable

Safe, Effective Control Protocol

1. Physical removal: Squish visible bugs with fingers
2. Alcohol swabs: Cotton swab + 70% isopropyl alcohol on hidden bugs
3. Systemic granules: Imidacloprid granules to soil
4. Horticultural oil: Safer's Ultra-Fine Oil spray (suffocates)
5. Repeat weekly until no bugs found for 2 weeks

Environmental Prevention

• Improve air circulation (fan indoors)
• Reduce humidity
• Quarantine new plants
• Inspect regularly

If Severe

Systemic imidacloprid soil drench (Bayer Advanced) for guaranteed control. Test any spray on one leaf first.