The Sutton Seed Lettuce All the Year Round is a popular and reliable variety. It has a long sowing and harvesting season, producing large succulent heads. To ensure a continuous supply, sow little and often. Grow in a rich soil and water well during dry periods. Sow outdoors at fortnightly intervals from March to July, and in September sow varieties that will stand through winter to head the following spring. This variety matures in 10-14 weeks and is ready to harvest from May to October.