I do not have a sunroom or greenhouse either..thankfully my collection is just small, I make use of this growcamp. It was intended for vegetables, but I use it for orchids. Works well. I had a really good deal years ago at our local OSH. Our arid environment is preventing me from indulging to get more orchids. Just have to maintain what can be reasonably taken indoors for overwintering later.
And in deference to the current drought, I am not running our fountains.
I just use the fountain now to hang my Vanda coerulea. Poor Vanda..it is still struggling here..but it is alive and surprisingly trying to form a good fat root, so I still have hope for it, just got to be misting more often. I will certainly dunk this plant in water next week.
The dreadful 97F temps are coming next week...