Sunburn on air plants
What's Happening
Tillandsia evolved as canopy epiphytes, receiving bright but filtered light through forest canopies or scattered light in open arid environments. Direct sun exposure—especially hot afternoon sun (12pm-4pm)—causes photoinhibition and oxidative damage to trichome cells. The damage appears as bleached, crispy brown patches on leaves, particularly affecting the outer edges and trichome-dense xeric species. Unlike mesic understory plants, Tillandsia lack protective anthocyanin pigments for UV defense.
How to Fix It
- 1
Immediate relocation: Move to bright indirect light only (east-facing window with sheer curtain ideal)
- 2
Recovery care: Increase humidity to 60-70% to support stressed tissue; maintain consistent watering
- 3
Light acclimation: If moving to brighter location, increase exposure gradually over 2-3 weeks
- 4
Damaged tissue: Trim severely damaged leaves with sterile scissors to prevent pest attraction
- 5
Measurement: Use light meter—Tillandsia prefer 2000-5000 lux; avoid locations exceeding 8000 lux
What You'll Need
How to Prevent It
Position plants 3-5 feet from south/west windows or use sheer curtains. Xeric species tolerate more direct morning sun (before 10am) than mesic types. When using grow lights, maintain 12-18 inches distance.