Chenille plants (Acalypha hispida) are prone to downy mildew, especially when leaves stay wet overnight. If mildew appears, remove all affected leaves and spray the entire plant—top and bottom of leaves, stems—with a suitable fungicide. Even asymptomatic foliage may harbor spores.
Mist early in the morning so foliage dries completely before evening. For an east-facing window with sun from 7:30 AM to noon, mist around 7 AM. This mimics natural dew cycles and prevents prolonged moisture that encourages fungal growth.
Provide bright, indirect light; avoid full sun. Water when the top inch of soil feels dry. Fertilize lightly during active growth. Prune spent blooms to encourage new flowers. With proper air circulation and morning misting, chenille plants recover well from mildew outbreaks.
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