Greenhouse: Good article on heating a greenhouse,, check it out : ), 1 by 2pugdogs

2pugdogs wrote:
I have a lot of black 5 gal. buckets, do you just fill them up with cold water and set them in the GH. Or do you have to fill them up first with hot water? What if the water doesn't get hot. I know my GH gets in the 70's to the low 80's in the day. Is that enough to heat the water in the buckets?

Here is another suggestion.

I have my GH on the south side of my house about 2 ft. away. My husband ran a vent from our house heater to the GH. This really helps out. At night I make sure the house doesn't get below 62*. You have to heat your house you may as well have a little bit of that heat going to your GH. I know it won't take care of it completely so I have a electric heater in the GH. I keep it set on the frost setting. So far we have had nights down to 28* and the flowers in the GH are doing fine. You will be able to see how close the GH is to our house. By putting it there our house blocks the north wind.