Lamb’s lettuce is also known as corn salad and mache. Technically an arable weed, its other name, 'corn salad', relates to its habit of growing between the stubs of corn crops after they've been harvested. Lambs' lettuce is a low growing salad crop with small, dark green leaves with a slightly nutty flavour, and is prized for its hardiness and availability in winter.
Sow lambs' lettuce seeds on moist soil or compost from spring to summer, covering the seed with a light layer of compost. In cooler months, cover the growing area with a cloche to aid germination and growth. There's no need to thin the leaves, simply harvest them as and when you need them and sow every two weeks to ensure a continual crop.