What % Shade Cloth To Use
I am in the process of building a pergola and I'm planning on hanging my orchids under it during the summer months. The pergola is in full sun from about 11am to 6pm, so during the hottest part of the day. Also, I'm in zone 7b, have hot humid summers, and can keep my orchids outside from May to Sept. I grow a mixture of vandas, cattleyas, and encyclias. I'm going to buy shade cloth to cover the pergola with but I'm not sure which percentage to get. Is 30% enough? I want the vandas to have plenty of light but would also like to be able to move some of my cattleyas and encyclias out of my greenhouse.
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