On Thu, 8 Dec 2011 17:09:51 +0000, magdalena wrote:

Where can I buy a second hand green house, am on budget and am
interested to grow vegetables.

Coldframes are usually the cheapest "greenhouse" around, and they're easy to
make. The production per square foot can be as high as a greenhouse, at a few
percent of the cost.

http://www.motherearthnews.com/organ...maz79zsch.aspx

If you need heat, you can add heated cables or a good layer of fresh
manure under about 6" of regular soil, or bank the coldframe with manure.
http://extension.missouri.edu/p/G6965 -- that turns it into a hotbed.

The biggest expense with a coldframe or hotbed is an automatic opener if you're not around to open and close it for ventilation as needed. (and you have
to do that with a greenhouse, too.)

Kay