Treating Scale on Bird of Paradise with Horticultural Oil: Application Timing and Safety

White "Fungus" Is Actually Scale

The white, cottony substance on your bird of paradise leaves is a scale infestation. Horticultural oil is the standard treatment.

Mix oil per label (e.g., Ultra‑Fine Oil, Organicide).
Spray thoroughly in late afternoon.
Allow to sit overnight.
Next morning, before sun hits the leaves, rinse off the oil and dead scale with a strong water stream.

Morning rinsing prevents the oil from magnifying sunlight and burning the foliage. Repeat if needed.

Tropical Plants: 30-Year-Old Bird of Paradise Won't Bloom: Needs Cool Winter; Eliminating Scale Insects on Bird of Paradise Plants; Treating White Fuzz on Bird of Paradise: Mealybugs or Scale; White Bird of Paradise Root Threat to Pool & Spa; Bird of Paradise Cold Stress Recovery: Managing Split Leaves in Southern California; Choosing the Right Container Size for a Growing Bird of Paradise; Heliconia Relationship to Bird of Paradise and Care; Bird of Paradise Moved Outdoors Develops Black Spots: Fungal Adjustment; Bird of Paradise Fungus from Black Stalks; Bird of Paradise (Strelitzia): Giant Paddle Leaves and Rare Crane Flowers

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