Zygotera, zygolum,zygopetalum outside in summer

[pjoeverett]

I live in northern Ohio and we are going on vacation. Most of my orchids will remain outside in the trees. Would it be safe to hang these orchids under the trees for several weeks? We will have rainy days. Unfortunately they already have a few spots from fertilizer so I am worried about the rain. Temps. may drop into the low 50's but I can protect from sun. And would a pap. mix work well for them? I could repot to help with the fertilizer problem.
So happy here to have both my Brassavola nodosa in bloom and also Prosthechea cochleata.

[aliceinwl]

I can only speak to the Zygopetalum. I keep mine outside and they’ve done okay going down to at least the mid 40s. They’ve done fine getting rained on too.

My oldest Zygopetalum has weathered lows in the upper 30s, but I’m not sure if all varieties can go this low. A new one that I got in the dead of winter didn’t take the lows well (but it didn’t really have a chance to acclimate gradually either).