cold damage and chilling injury on Peace Lily
Quick answer
If your Peace Lily has cold damage and chilling injury, the most likely cause is: Peace lilies are tropical plants sensitive to temperatures below 60°F (15°C) and cold drafts. Chilling injury occurs when leaf cells experience temperatures below their metabolic threshold, causing cellular membrane damage that appears as blackened, water-soaked patches on leaves. Unlike sunburn which affects exposed leaf surfaces uniformly, cold damage often appears on leaves closest to windows or draft sources. The damage is permanent but the plant will recover if moved to appropriate conditions before crown damage occurs.
Start here:
- 1. Inspect damage pattern: Black patches on side facing window/draft = chilling injury, not disease
- 2. Immediately relocate to stable temperature zone away from windows, vents, or drafts
Why Peace Lily gets cold damage and chilling injury
Spathiphyllum wallisii
Peace lilies are tropical plants sensitive to temperatures below 60°F (15°C) and cold drafts. Chilling injury occurs when leaf cells experience temperatures below their metabolic threshold, causing cellular membrane damage that appears as blackened, water-soaked patches on leaves. Unlike sunburn which affects exposed leaf surfaces uniformly, cold damage often appears on leaves closest to windows or draft sources. The damage is permanent but the plant will recover if moved to appropriate conditions before crown damage occurs.
How to reverse cold damage and chilling injury on Peace Lily
- 1
Inspect damage pattern: Black patches on side facing window/draft = chilling injury, not disease
- 2
Immediately relocate to stable temperature zone away from windows, vents, or drafts
- 3
Trim damaged blackened tissue with clean scissors—damage is permanent and won't recover
- 4
Maintain 70-80°F during recovery period to support metabolic repair
- 5
Increase humidity to 70%+ to reduce additional stress on compromised tissue
- 6
Monitor for 2-3 weeks—new growth should emerge normally if crown wasn't damaged
- 7
If entire plant blackens or crown becomes mushy: Propagate from any remaining healthy stem segments
- 8
Install thermal curtains or move plant to interior room during extreme cold snaps
Keep cold damage and chilling injury off this Peace Lily
Maintain temperatures between 65-80°F year-round. Avoid placement near drafty windows in winter, air conditioning vents, or exterior doors. Use thermal curtains on windows in cold climates. Keep plants away from cold exterior walls in unheated spaces. Monitor with thermometer—temperatures near windows can be 10-15°F colder than room temperature during winter nights.