Hi Karl, no I could never afford a greenhouse. I built a 16 X18' sunroom addition back of my house. No heat or AC in there. It's very well insulated & 2 skylights & big windows facing south. When I need more heat, I open the french doors a little (from kitchen) & let heat from house in there. I think the coldest in there was upper 40's, & then I crack the door open. Now, Millet & Citrus Joe (joenco) are in same zone -5 in Co. & they heat huge greenhouses that they have. Look at the thread somewhere at bottom about "greenhouses" - they have pics.
Waukesha is only few miles west of me...if you ever go there again, give me a holler. You gotta see the Domes here! 3 HUGE glass domed greenhouses.
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Patty
I drink wine to make other people more interesting