Hibiscus: Score!, 1 by WQP

WQP wrote:
I don't now much about overwintering since I live in a warmer climate, but if I had to find a way to heat up a green house I wound use some sort of black plastic weed cover on the floor to absorb as mush heat from the sun as I could during the day.
I would also try and use some mirror two reflect the suns rays down to the floor and plants without obstructing from were the sun rays are comming from, would also use an extra transparent plastic over the entire green house to aid to keep the cold out. wish I could help more but my knowledge with green houses is limited.

Wilfred

BTW, raining a lot today over here.