Sow thinly 13mm (0.5in) deep in mid-summer outdoors. Seeds can also be sown in spring for a summer harvest.
Plants do best in a slightly shaded position.
When large enough to handle, thin seedlings to 5-10cm (2-4in) apart.
Keep the soil moist during dry periods.
Outdoor sowings may need cloche protection during bad weather.
Leaves can be cut from October to December, or sometimes until as late as March. Continue harvesting the leaves until the plant starts to flower in spring.
Frosts: Green leaves are susceptible to hard forsts in winter.
Remedy: Remove damaged shoots; new shoots will replace them.