In the orchid show, many plants were in direct light. I thought orchids require filtered light.
You are correct--too much direct light can cause sunburn on orchids' leaves.
The displays in the conservatory are not a reliable a guide for optimal plant lighting. Because these displays are temporary, less attention is paid to light conditions. If they were long-term displays, the lighting would have to be different.
For tips on a variety of gardening topics, see our Plant Information Guides.
- Courtesy of NYBG Plant Information Service