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Scale or Mealybugs on Mixed Houseplants: Dual Treatment Strategy

Identification

White cottony substance = scale or mealybugs. Both suck sap and excrete honeydew.

Treatment

Systemic: Bayer Rose & Flower drench (soil application).
Contact: Horticultural oil spray or isopropyl alcohol dabbed on insects.

Combined Approach

Systemic kills feeders; contact kills visible colonies. Repeat per label.

Tropical Plants: Magnolia Scale? Get Accurate ID Before Treating; Sago Palm Scale: Horticultural Oil Spray; Ming Tree (Polyscias) Sticky Leaves: Scale Insects; Robellini Palm Frost Damage and Scale Management in Florida; Mistletoe Scale Insect Management: Cold Tolerance and Indoor Safety; Scale Infestation on Orchids: Systemic Treatment and Prevention Strategy; Euonymus Scale: Identification and Control; Money Tree (Pachira) Scale Insects: Identification and Treatment; Soft Scale on Bird of Paradise: Alcohol-Soap Treatment Protocol; Treating Scale on Staghorn Ferns: A Simple Home Remedy

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