Viewing post #3084826 by MoonShadows

SkirtGardener said: What I have in mind is effectively an unheated structure strong enough to last in snow country, permanently covered with a white material to keep it shady enough for hardy landscape propagation and less prone to heat up in the winter. I'm thinking of this as a great way to keep deer & weed seeds out of my propagating bins, even as bottom-heated beds would give me a great place to keep them to encourage root growth as the tops remained cold.

Do you think these ideas are compatible? I don't know of any greenhouses of this nature, unless I've seen them and just didn't recognize them as such.

Thank you!

If you haven't seen it, it probably isn't viable. Doesn't sound viable to me, either. An unheated greenhouse without excellent insulation will only stay a couple of degrees above the outside temperature after the sun goes down (and on cloudy days), and I don't see how bottom-heated beds will keep the plants (above ground) alive. The part above ground will freeze.