Humidity and Orchid growing

[Bolero]

My advice comes from southern Australia which can have humidity below 10% quite often during summer.

I have no trouble growing cattleyas outside in the low humidity but growing inside your home would present different challenges I wouldn't be able to help further with. However, it can be done an done easily. Cattleyas are easy to grow really and they can tolerate low humidity. I have a few awarded plants and they all grew in low humidity and this includes cattleyas, paphs and masdevallias.........so think about that.