Quote:
Originally Posted by tucker85
I think direct sun after 3 pm is fine for cattleyas, vandas and even you oncidiums. They may burn a little at first or develop red spots or red borders on the leaves but eventually they will adapt to the brighter light and grow better as a result. It helps to increase the light slowly if that's possible. I have friends with cattleyas mounted on palm trees that get almost full sun except at mid-day. One other point. Orchids given strong light need to have good root systems so don't put a small orchid with a couple of roots in full sun.
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All of the windows in my apartment face west. My bedroom window has tiny teeny weeny trees outside that do NOT in any way filter the sun (it's too high in the sky by 2:30 when the sun swings to that side of the building). I've got an Eplc., Blc., and Lc., hanging out in that window and when I initially put them up there they HATED the direct light (they had previously been in a bathroom window with a big tree outside that shaded them..but it was too much shade and they were too dark green so I had to move them). I got a piece of lace from Walmart and hung it up against the window, and one of the days it was super hot they got all purple and angry at me despite the lace being there to break up the direct light.
I got them a small desk fan and some humidity trays (with the blinds down behind them it's kind of its own contained area), and when I get home around 4:30 I mist them and turn the fan on, and I make sure their little trays have water in them...they are totally fine now. Their leaves are nice and turgid, they are growing roots and shoots like weeds...they just had to adjust. I think that with your shadecloth they will adjust and be just fine, as Tucker said.
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