Sharon, your gigantea is pretty.
The light level for Rhy. gigantea is just like that for cattleyas. Sunburn would occur in summer if you put them under direct sun exposure.
For me, a big problem is that they dislike cold days here. Cold and dryness would make them drop their leaves, which make them look ugly.

All I can say is that I have upped the light to getting purple edges on the leaves and watered and fertilized like crazy all year. Finally got 3 spikes this year (only to have one partially damaged by thrips before I caught it).
Do bring it in if it goes below 55 just like the vandas.
Jan

Thanks for the info! I tried growing my other one hanging up in the rafters for brighter light during the summer, but the leaves, although turning purple on the edges, got limp and wrinkled in a hurry, so I hung it off the end of the bench where it still gets light but is cooler and more damp directly in the path of the fogger. Nada bloom spikes. But at least it's still growing, so there's hope.

Sharon

The blooms are beautiful!~Charm

Gorgeous flowers
I love the fragrance! Cannot have enough of these guys (I bought every var possible from Oak Hill :-) )

Olya

Sharon, that one's esp. great. Haven't seen it before. I have the peach, and it hasn't bloomed yet. The grower says it looks extra healthy. Maybe I can't give it enough light.

Pheli and Jan, I'll use your tips, too. Thanks.

Pheli, what's a cold day for you?

Whitecat8