Rubber Plant Sunburn — White or Brown Patches from Direct Sun
Rubber Plant (Ficus elastica)
Symptoms
- bleached-looking patches on the glossy leaf surface facing the window
- patches appearing after moving to a brighter location
- patches on the side of the plant closest to the window
Causes
Direct sunlight through glass
Ficus elastica's glossy, leathery leaves hold up better than a thin tropical leaf would, but that resilience has limits — magnified sunlight through window glass can still cause photobleaching and tissue damage. The magnifying effect of glass concentrates light and heat in a way that outdoor light doesn't. Plants brought in from a garden center that received indirect greenhouse light are particularly vulnerable to sudden glass-magnified direct sun.
How to Fix It
- 1
Move the plant a few feet back from the window, or add a sheer curtain to diffuse direct sunlight.
- 2
Existing bleached or burned areas are permanent — the cells are dead. They won't spread once the plant is out of direct sun.
- 3
For leaves with extensive burn damage: remove the entire leaf. Severely damaged leaves don't recover and may develop secondary fungal issues.
Prevention
- Place Rubber Plants in bright indirect light rather than direct sun
- Add a sheer curtain to south or west windows
- Acclimate gradually when moving from indoor to outdoor or window-adjacent positions
Quick Summary
| Plant | Rubber Plant (Ficus elastica) |
|---|---|
| Category | Light |
| Likely causes | Direct sunlight through glass |
| Fix steps | 3 steps — see above |