If the lettuce flowers, it may render the leaves inedible. Read on for tips from horticulturists about how to harvest both loose-leaf and full heads of lettuce. Related: How to Grow Lettuce for ...

Alternatively, sow seeds outdoors from late March in well-prepared, loose soil in shallow, straight drills. Keep the soil moist after sowing until the seeds are growing strongly. Thin the seedlings to ...

Top tip: Don’t dress green leaf until just before serving to keep the leaves crunchy. Crisp, juicy and refreshing with the mild and neutral taste of spring water, this dense head of lettuce is ...