Hi imdocrob,Every fall I put up a temporary greenhouse.I use pvc pipe and plastic sheet that is 40' long 9' high and 12' wide.I reuse the pvc pipe and buy new sheeting each year.The greenhouse runs the length of the back of my house.The sun heats up the brick and concrete slab which helps heat up the area at night. pictures below.john
http://smg.photobucket.com/albums/v4...Anch=imgAnch32
http://smg.photobucket.com/albums/v4...Anch=imgAnch31