Green salad is something most of us associate with the summer months. Cos lettuce to make a crunchy ceasar salad or butterhead for salad nicoise. But it is possible to grow salad in the winter and in some ways it is more staisfying than in the summer when there is such an abundance of veg.
Chicory and endive are traditional salads to grow in the winter, but I have never had much success with either. What has worked well for us is a leafy salad mix called Oriental Saladini (Thanks for the tip, Phil). Last year a couple of rows sown over a soakerhose in the greenhouse kept us in salad all winter and this year looks like being the same.