Joan's indoor banana plant has sticky "honey" on leaves—classic honeydew from sap-sucking insects (aphids, scale, mealybugs). Check leaf undersides and stems. Wash leaves with mild soap and water (1 tsp castile soap/quart). Repeat weekly. For persistent infestations: neem oil or insecticidal soap. Isolate plant.
If no insects visible, it could be natural sap (guttation)—harmless. But honeydew attracts sooty mold. Monitor. Healthy plants resist pests; ensure proper light, water, drainage.
Indoor pools create humidity—watch for fungal issues too. Air circulation helps.
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