That is so great! So, are you starting new plants all the time or buying then to keep exchanging? If all of yours keep growing you're in real trouble.
I do that with my daughter in MI. only we don't do half way, mom goes to her! I start her stuff from seeds and then we go nursery hopping up there. She has some really good and cheap places around her. So I go home with a load also. Only she gets mad a me if they don't live and won't give me any more! LOL! She's given me a gorgeous geum (smoke - geum triflorum) three times now and all three times it has died. And I love it and really want it. Finally she told me she had lots of babies and I can have more!
http://www.prairiemoon.com/see...
I confess, I actually do have a third gh, but it's a cheapy. I don't heat it and it doesn't hold any heat. but it's great to work in out of the wind. Was going to sell it when I got my new one but now DH doesn't want to. I over wintered some spider plants and dracena and gerbers in there with no heat and extreme temperature shifts. Other than storing stuff, it's not much good for anything.
Your second one looks like a good set up and out of the wind with the fence there. when you say you wrapped plastic around the frame, do you mean just around the framework or lined the entire house? Bubble wrap or what kind of plastic. I have a vision of you with a big roll of glad wrap!