Dave - Thanks for directing me to this thread from this week's podcast thread.
I don't have a greenhouse, but I do use a partial shady area under my mini-pergola to root cuttings. It's always a challenge to keep them from drying out in the summer heat, but I have had some good success with most of the plants I am rooting. I have a DIG irrigation system that runs behind that area. Could I just tap into it with the timer and misters? Maybe I could use a Y connector to run some 1/2" from the main line and then add the timer and misters? I could hang it from the cattle panel trellis on the preferred side of the pergola. I don't know. But this sure has given me some ideas! I like those misters! Perfect for rooting cuttings!!!!