Gardenia Pests: Aphids, Sooty Mold, and Treatment

Identifying the Problem

• Black leaves: Sooty mold fungus growing on honeydew.
• White sticky coating: Honeydew excreted by aphids.

Treatment Steps

1. Spray with general insecticide (e.g., neem oil, insecticidal soap) to kill aphids.
2. Wash leaves with horticultural soap to remove sooty mold.
3. Repeat in 7–10 days if needed.
4. Monitor for reinfestation.

Prevention

Encourage beneficial insects (ladybugs, lacewings). Avoid broad-spectrum insecticides that kill predators.