The first and last of these lettuces are so tender that the leaves practically melt on the tongue. Whether you harvest the lettuce from a greenhouse or a cold frame, the bright green heads delight every gourmet.

'John' is a particularly vigorous variety that is naturally resistant to powdery mildew (types 1-24), which is particularly dangerous in cold and wet seasons. The reliable variety has naturally high yields in autumn and spring, even under the protection of warming tunnels, fleeces or foils.