Sunburn on sedum
What's Happening
The 14-day acclimation protocol addresses the biological delay in protective pigment synthesis. Succulents require 7-10 days to upregulate anthocyanin production and thicken cuticular wax layers in response to increased light. This 'sunscreen' mechanism cannot activate instantly, leaving plants vulnerable during the first week of any light transition regardless of species hardiness.
How to Fix It
- 1
Days 1-3: Place in bright indirect light only (no direct sun beams)
- 2
Days 4-6: Add 1-2 hours morning sun (before 10am) or filtered light through sheer curtain
- 3
Days 7-9: Increase to 3-4 hours morning sun or dappled afternoon shade
- 4
Days 10-12: Extend to 5-6 hours including partial afternoon exposure
- 5
Days 13-14: Full exposure for sun-loving species (Echeveria, Sedum); maintain partial shade for sensitive types (Haworthia, Gasteria)
What You'll Need
How to Prevent It
Never transition plants from indoor to outdoor light, or from shade to direct sun, in less than 10 days. Plan moves during cloudy weather windows when possible. For grow lights, start at 12-18 inches distance and lower by 2-3 inches every 3 days while monitoring for stress signs.