http://www.ehow.com/how_7342882_heat-mini-greenhouse.html
I thought of using manure but not bottles. Curious! I wonder if it’s better to use small or large bottles? Large would have more latent heat…
Can you tell I’m impatient to start some seeds off?! We got above freezing in the mini greenhouse this week but 2-12 C still won’t cut it for seeds.
