65% confidence
Based on 20,000+ analyzed cases
Edema on air plant
What's Happening
Dense foliage or poor air circulation creates a "boundary layer" (~0.5mm) of humidity at the leaf surface, preventing proper transpiration. Water backs up in tissue, causing cells to swell and eventually burst, forming necrotic lesions often misdiagnosed as fungal spots.
How to Fix It
- 1
Install oscillating fans to disrupt the boundary layer
- 2
Maintain a Vapor Pressure Deficit (VPD) between 0.8-1.2 kPa
- 3
Space plants to allow airflow between leaves
What You'll Need
How to Prevent It
Avoid placing air plants in enclosed terrariums or tight groupings without active ventilation.
Related Problems
Same Problem on Other Plants
Frequently Asked Questions
What causes edema on my plant?
Dense foliage or poor air circulation creates a "boundary layer" (~0.5mm) of humidity at the leaf surface, preventing proper transpiration. Water backs up in tissue, causing cells to swell and eventua...
How do I fix edema?
Install oscillating fans to disrupt the boundary layer. Maintain a Vapor Pressure Deficit (VPD) between 0.8-1.2 kPa.
How do I prevent edema from happening again?
Avoid placing air plants in enclosed terrariums or tight groupings without active ventilation.