Dwarf Banana Black Spots: City Water Chemicals and Overwatering

Fix the Water

Chlorine and fluoride in tap water cause black spots. Let water sit in an open bucket 48 hours before use—chemicals evaporate.

Light & Water Adjustments

• Full sun all day: Place right at south window, blinds open dawn to dusk.
• Cut watering: Winter is dry season in tropics; water less frequently. Let top soil dry well.

Expected Result

With pure water, maximum sun, and reduced watering, the banana should recover. Yellow leaf edges also indicate overwatering.