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Orchid Scale: Persistent Pest

Reddish-brown scale on orchid leaves recurs after alcohol wiping. See linked resource (broken) for control. Isolate plant, treat with horticultural oil or systemic insecticide.

About Gardening: Scale Insects: Identification, Neem Oil, and Coffee Grounds Strategy; Oncidium Orchid Care: Post-Bloom Management & Repotting; Mystery Orchid Bulbs in NorCal: Likely Cymbidiums, Find Local Help; Scale Insects on Ivy and Spider Plants: Thorough Spray Treatment; Treating Scale on Large Schefflera arboricola (Arbicola); Scale on Sago Palm: Comprehensive Non-Toxic Treatment Options; Indoor Scale Treatment Options for Schefflera; Scale Insects: Identification and Control; Controlling Wax Scale on Gardenia; Wax Scale on Boxwood: Identification and Treatment Timing

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