This morning I noticed that the lettuce seeds which I had scattered haphazardly in my cold frame only 2 weeks ago have started to germinate. Cold frames are handy if you want to protect small plants from the cold. I also like to use mine to grow early seeds of lettuce or any other crop which needs protection (from rabbits as well as the cold). I usually try to sow lettuce seeds such as the Little Gem variety or mixed salad leaves (Red Salad Bowl) in a row, but since I found an old packet of seeds which I did not expect to germinate I freely sprinkled the seeds and put a little bit of compost on top.
My top tip: this may sound obvious but you need to remember to water your seeds regularly when they are covered in the cold frame as it can get quite dry. And in summer it’s warm enough to be able to remove the glass frame completely and just use the cold frame as a raised bed.
You can get a ready-to-be-assembled cold frame which is lighter than mine (made of polycarbonate glazing and aluminium frame) and can be delivered to your doorsteps in good time.