Ok, just for giggles, I took some of the overcrowded cabbages and celery out of the cold frame and transplanted them into the big garden. If it does freeze, I can pull some mulch over them to protect them, and the cabbage and celery don't seem to mind the cold anyway.
/johnny
What kind of celery do you plant? Also, do you put stuff around it, to blanch it/ keep it from turning all green?