> > However, there is one huge disadvantage to cold frames in our climate: they > require attention at least twice a day in the matter of opening and closing > them. A couple of hours of January sunshine will cook the contents of a cold > frame exposed to the sun (and for most purposes you definitely want the > frame to have a sunny exposure) A cold frame of the Nearing design, properly sited, can be easier to manage. The secret is the unobstructed overhead light but no direct sunshine from a low winter sun. Mark Mazer Hertford, North Carolina USA Zone 8a