For seamless progress from summer into autumn, pull up summer lettuces as soon as they flower. Work in fresh compost with a fork to revive the soil, then replant with pre-sown or shop-bought plugs of hardy salads.
Also, in August, begin sowing salads for overwintering. Sow through to mid-September so they reach perfect picking size before the cold slows growth.
Grow the salads in a raised bed, as below, divided into sections for different varieties, to make it easier to protect crops from the cold. They'll survive chilly weather outside, but use cloches and fleece to keep your salad leaves looking fresh and pristine.
Discover salad crops to sow in August, below.