sunburn on Aeonium
Quick answer
If your Aeonium has sunburn, the most likely cause is: Indoor-grown succulents adapted to 500-2000 lux (typical home lighting) face extreme photoinhibition risk when moved outdoors where direct sun exceeds 80,000-100,000 lux. The magnitude of this light intensity jump (40-200x increase) overwhelms photosynthetic capacity regardless of species' ultimate sun tolerance. Even desert-native succulents require acclimation because indoor cultivation selects for shade-adapted phenotypes with thinner cuticles.
Start here:
- 1. Phase 1 (Days 1-3): Full shade location with bright ambient light but zero direct beams
- 2. Phase 2 (Days 4-6): Bright shade—dappled light through tree canopy or indirect reflected light
Why Aeonium gets sunburn
Indoor-grown succulents adapted to 500-2000 lux (typical home lighting) face extreme photoinhibition risk when moved outdoors where direct sun exceeds 80,000-100,000 lux. The magnitude of this light intensity jump (40-200x increase) overwhelms photosynthetic capacity regardless of species' ultimate sun tolerance. Even desert-native succulents require acclimation because indoor cultivation selects for shade-adapted phenotypes with thinner cuticles.
How to reverse sunburn on Aeonium
- 1
Phase 1 (Days 1-3): Full shade location with bright ambient light but zero direct beams
- 2
Phase 2 (Days 4-6): Bright shade—dappled light through tree canopy or indirect reflected light
- 3
Phase 3 (Days 7-9): Filtered sun—morning sun only (before 10am) or through 50% shade cloth
- 4
Phase 4 (Days 10-12): Extended morning sun—6am-12pm direct exposure with afternoon shade
- 5
Phase 5 (Days 13-14): Full day exposure for sun-hardy species; maintain afternoon protection for sensitive varieties
- 6
Monitor daily: Any signs of bleaching or browning indicate insufficient acclimation time
Keep sunburn off this Aeonium
For any indoor-to-outdoor transition: Start in full shade (under tree canopy or north-facing patio) for 3-5 days, then progress to bright shade, filtered sun, morning sun, and finally full exposure over 2+ weeks. Use a physical barrier (shade cloth at 70%, then 50%, then 30%) rather than relying on timing alone.