I just wanted to give a quick update showing the end of 2007's garden has volunteered to provide a 4 season harvest.
I have built a small straw bale cold frame to shelter the lettuce that appeared as volunteers from my lettuce that bolted this summer. I even had some beautiful colors of lettuce in my yard for a while.
The cold frame is just 6 bales covered with plastic. I used some random pieces of lumber that I rolled under the plastic and staple gunned the plastic around it. One end is held in place with tent stakes, no lumber this end. One corner (windy side)is stappled heavily to the garden border timbers. Yesterday I also ran drip irrigation into the bed, weeded and side dressed with organic fertilizer. I should hopefully have lettuce in a month.