I built something like this in the picture, but it's sunk into the ground maybe 6" and has logs below that (open bottom), anchored next to my house where it gets shade in the 24 hour daylight. We only have 3 months (at most) of non-freezing nights where I live. It helps, but I'm trying to extend the season a little more by making it warmer. Has anyone done this in the arctic before?
I'm having second thoughts about sinking it into the ground. It was supposed to insulate it better but isn't the ground colder in the spring? I was also considering putting 1 or 2" foam insulation around the bed part (the wood). I can put in twin wall polycarbinate instead of plastic, but it's not cheap. I'm not sealing off and insulating the bottom. Maybe I should…
Eventually I want to make a bigger one for the community, but I like this idea of small greenhouses that are cheap to build and that just work. Any advice would be appreciated. Thanks.
by simiform