It can be really tricky to sow small seeds like lettuce and thinning out overcrowded seedlings afterwards is very difficult. These seed tapes offer the perfect solution, provide accurate spacing from the start! Ideal for children or gardeners with a disability- just rake the soil. create a shallow groove and pop the seed tape in. This 'Red and Green Cos Mix' will reward you with wonderful, crisp lettuces with a vertical habit, making it a great choice for smaller vegetable patches. Height: 20cm (8in). Spread: 30cm (12in).