Thanks all. I have to hang them from the rafters, not the screen, so they are 8 feet apart. I took several classes at the University of South Florida on orchids. The instructor was Jim Clarkson, the curator of orchids at the botanical gardens there. He always stressed keeping your tools clean and space between the plants to alow air movement and keep from spreading disease. I think he was right.
Jim
"Advertising may be described as the science of arresting the human intelligence long enough to get money from it." -- Steven Leacock
I wish!
The greenhouse part is arriving sometime in December, that's the soonest that Arcadia , the greenhouse company, can ship it.
But we'll have the luxury of time to get the electricity, water and flooring all set.