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Treating Magnolia Scale and Sooty Mold on Saucer Magnolia

Insecticide Options for Magnolia Scale Infestation

Scale insects suck sap, excrete honeydew → sooty mold. Control scale to eliminate mold. Dormant horticultural oil; crawler sprays (late Aug/early Sept) with acephate, imidacloprid, bifenthrin, etc. (see OSU hyg-fact/2003.html). Repeat applications needed. Females birth live crawlers Aug-Sept.

Trees: Magnolia Scale? Get Accurate ID Before Treating; Organic Rose Scale Control: Soaps, Oils, and Peppermint; Holly Hedge Dieback: Scale Insects Causing Sooty Mold; Meyer Lemon Scale: Horticultural Oil Protocol; Systemic Soil Drench for Magnolia Scale: Bayer Advanced; Controlling White Scale on Sago Palms: Oils, Soaps, and Systemics; Saucer Magnolia and Black Walnut Toxicity: Can They Coexist?; Magnolia Scale: Bumps on Branches, Honeydew, Sooty Mold; Magnolia 'Saucer': Classic Huge Saucer-Shaped White and Pink Blooms; Scale on Magnolia Attracts Wasps: Monitor Crawlers for Timely Oil Sprays

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