Direct sun from 11am to 3pm will burn your orchid leaves unless they are Mokaras, reed stem Epidendrum or some Vanda plants. Lab created plants are pampered with controlled light and humidity so they will definitely burn in direct sun.
Filtered sun is when you put the plants under a tree, a shade or a thin curtained window sill.
Your NE position with a 3pm direct sun is still tricky since you are in Miami where the temperature at 3PM can be scorching hot in mid summer. In the fall when the temperature at 3pm is below 90 then the direct sun will be tolerable to your plants.
Orchidsarefun is right, invest on a shade cloth. You can find those really cheap at Wal-Mart garden section.
Last edited by Bud; 07-20-2013 at 11:48 PM..
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