edema on Anthurium
Quick answer
If your Anthurium has edema, the most likely cause is: Edema in Anthurium occurs when root uptake of water exceeds leaf transpiration capacity, causing cells to burst and create blister-like brown spots. This happens when plants are watered heavily during low-light periods or when high humidity reduces transpiration. The thin, velutinous leaf cells of Anthurium andraeanum are particularly vulnerable to rupture from internal water pressure compared to thicker-leaved tropical plants.
Start here:
- 1. Identify edema: Blister-like or water-soaked brown spots, often on leaf undersides or margins, distinct from circular lens burn
- 2. Immediate action: Stop watering for 7-10 days to allow plant to process excess moisture
Why Anthurium gets edema
Anthurium spp.
Edema in Anthurium occurs when root uptake of water exceeds leaf transpiration capacity, causing cells to burst and create blister-like brown spots. This happens when plants are watered heavily during low-light periods or when high humidity reduces transpiration. The thin, velutinous leaf cells of Anthurium andraeanum are particularly vulnerable to rupture from internal water pressure compared to thicker-leaved tropical plants.
How to reverse edema on Anthurium
- 1
Identify edema: Blister-like or water-soaked brown spots, often on leaf undersides or margins, distinct from circular lens burn
- 2
Immediate action: Stop watering for 7-10 days to allow plant to process excess moisture
- 3
Increase transpiration: Move to slightly brighter location or add gentle air circulation with fan
- 4
Reduce humidity temporarily: If above 75%, lower to 60-65% for 1-2 weeks to encourage leaf drying
- 5
Long-term fix: Adjust watering schedule to morning only; reduce volume in low-light conditions
Keep edema off this Anthurium
Water only in morning hours when transpiration is active; reduce watering frequency during winter low-light months; maintain 60-70% humidity (not excessive 80%+); ensure good air circulation to promote transpiration; allow soil to dry 2-3 inches between waterings.