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Hibiscus Black Spot: Fungal Disease Treatment

Leticia's orange hibiscus developed black spot (fungal) in hot, humid zone 9. Avoid wetting foliage; water at ground level. Home remedy: 1 tbsp baking soda + 1 gallon water + tiny drop dish soap or 1 tbsp Murphy's Oil Soap. Spray weekly, early morning.

Perennials: Mango Tree Black Spots on Branches: Check for Scale; Fir Tree Infestation: Aphids/Scale, Sooty Mold, and Systemic Treatment; Black Mold on Young Tree: Aphids and Sooty Mold Fix; Black Sticky Residue on Patio: Sooty Mold from Aphids or Scale; Why Repotting a Stressed Hibiscus in Winter Can Be Fatal; Hibiscus Left Out in Freeze: Scratch Test for Survival; Hardy vs. Tropical Hibiscus in Tennessee: ID Yours & Overwinter Correctly; Plants That Tolerate Black Walnut Juglone Toxicity; Tropical vs. Hardy Hibiscus: Why Your Tree Struggled After Winter Indoors; California Black Oak: Majestic Native Tree for Wildlife and Timber

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