Why Cyclamen Buds Won't Open: Temperature, Water & Mites

Cultural Causes

• Temperature: Day 60–65°F (15–18°C), night 50°F (10°C). Hybrids tolerate slight stretch.
• Light: Indirect only. Sharp shadow = direct (bad). Fuzzy/no shadow = indirect (good).
• Water: Unique need: water when soil surface feels dry (not inch deep). Don't wet crown. If no room, bottom-soak 15 min.
• Deadheading: Clip spent blooms near base with scissors → more/longer blooms.

Cyclamen Mites

If culture is perfect but buds don't open: likely cyclamen mites. Tiny, orange/pink, 8-legged, cluster on buds. Larvae suck sap from unopened petals → buds never open. Spread rapidly.

Mite Treatment

1. Best: discard to protect other plants.
2. If saving: isolate, dedicated tools/apron. Trim infested buds. Submerge plant top in 110°F (40°C) water 15–30 min (maintain temp). Keep isolated until mite-free.
3. Insecticides ineffective.

Prevention: inspect new plants carefully.