Grow Your Lettuce! Get set for the growing season ahead. Lettuce 'Little Gem' is one of the earliest varieties to mature, producing small compact plants which are packed with a crisp, sweet heart. This cultivar grows well under cloches and also has excellent root aphid resistance making it a gardener's favourite. Height and spread: 20cm (8").Premium quality, beautiful plants. Grown from seed under glass in Lincolnshire.