Thanks DaisyI, I live in the Shaver Lake area, eastern Fresno, in the mountains just the other side of Yosemite from you.
The plan is that we will be building these as part of the house. It is hard to explain, but two walls will be the house's outside walls. The other two walls will be glass, probably sliding glass doors for easy access. I don't think there will be a lot of "walking through", because we should be able to reach everything from the door.
Building it attached to the house is a design choice based on a few factors, and I know that is counter-productive to the true nature of a greenhouse. But I also know I can make it work with modern tech for lighting and temperature control.
btw: We rarely get in the teens, 20's overnight happens, but isn't that common. Cold winter days are usually in the low 40's or so.
Thanks again for any other ideas.
