I just thought I'd post how I am planting lettuce again this year. I have a nice sized cold frame to start radishes, lettuce or any early crop a month ahead of time to get a good start here in Canada. Radishes are coming up nicely! Our grocery store has been carrying "live lettuce" for the last few years. It has the root ball on and tastes just like homegrown lettuce. And It's cheap! Last year there were 3 little bunches of different kinds of lettuce in one root ball. I bought 6 of them (that's 18 plants), cut off all the leaves except the center "heart" leaves. Washed and ate what I cut off, divided the root ball into 3 little lettuces and planted them in the cold frame. We ate off that lettuce all summer by cutting off the outer leaves, always saving the heart to re-grow. Yes we eat a lot of lettuce!