Cymbidium Bud Blast: Cold Drafts, Heat Vents, and Ethylene

Why Cymbidium Buds Yellow and Drop Before Opening

Healthy-looking Cymbidium spikes that abort buds are reacting to environmental stressors—often the same ones that affect Phalaenopsis.

Check for These Near the Plant

• Cold drafts from windows or doors.
• Heater vents blowing hot, dry air.
• Ripening fruit (ethylene gas).

Action Plan

1. Move the plant away from drafts and vents.
2. Remove fruit from the vicinity (>8 feet).
3. Maintain 55–75°F, bright light, humidity >50%.
4. Water when media is nearly dry; don't let it bone-dry.

The remaining healthy spikes should open if the stressor is eliminated. Cymbidiums are tough—correct the environment and they'll perform.