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Eradicating Whiteflies on Overwintered Allamanda: The Plastic Bag Spray Technique

Whiteflies on Allamanda in Michigan

Spray insecticide, then cover the plant with a large dry‑cleaner bag for a few hours (out of sun). This traps the spray and prevents whiteflies from escaping. Repeat weekly until gone. The bag method dramatically increases contact time.

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