leaf curling on Anthurium
Quick answer
If your Anthurium has leaf curling, the most likely cause is: Anthurium leaf curling results from a thermoregulation response where the pulvinus joint at the leaf base contracts to reduce exposed surface area when ambient temperature exceeds 80°F or when the plant detects heat stress from nearby sources (electronics, heating vents, sun-heated glass). Low humidity exacerbates this by compounding water potential stress with temperature stress — the thin leaf tissue loses water faster than roots can compensate, triggering the same protective curling mechanism.
Start here:
- 1. Move plant to cooler location (ideally 65-75°F) away from heat sources and direct sun
- 2. Check for heat sources within 3 feet: radiators, laptop vents, stovetops, direct sun through glass
Why Anthurium gets leaf curling
Anthurium spp.
Anthurium leaf curling results from a thermoregulation response where the pulvinus joint at the leaf base contracts to reduce exposed surface area when ambient temperature exceeds 80°F or when the plant detects heat stress from nearby sources (electronics, heating vents, sun-heated glass). Low humidity exacerbates this by compounding water potential stress with temperature stress — the thin leaf tissue loses water faster than roots can compensate, triggering the same protective curling mechanism.
How to reverse leaf curling on Anthurium
- 1
Move plant to cooler location (ideally 65-75°F) away from heat sources and direct sun
- 2
Check for heat sources within 3 feet: radiators, laptop vents, stovetops, direct sun through glass
- 3
Increase humidity to 60-80% RH using humidifier — higher humidity slows convective water loss
- 4
If leaves partially unfurl within 24 hours of correction, temperature was the primary cause
- 5
Use thermometer to identify microclimate hot spots in your space and avoid placing plants there
- 6
During summer heat waves, relocate Anthurium to coolest room and run fans for air circulation
- 7
Monitor new growth — if leaves emerge flat and healthy, the plant has recovered
Keep leaf curling off this Anthurium
Maintain ambient temperature at 65-75°F; position away from heating/cooling vents, electronics, and sun-heated windows; ensure humidity stays above 60% to buffer temperature fluctuations; provide good air circulation.