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To wipe out White Flies on Hibiscus use 1 gal warm water that has 1 cup sour milk and 1 Tbsp. flour added and mixed. Spray on the liquid on both sides of leaves. (I used an old fashion hand held fly sprayer for this.)
By Great Granny Vi from Moorpark, CA
Great tip thanks GG Vi! I've tried spraying with soapy water but unless the hose is set at fireman strength those little pests just hang on in there.