Lettuce SUZAN 300 SEEDS £1.70 Quantity: at £1.70 each Add To Basket Forms large heads, a good lettuce for mid summer harvest. Sowing instructions: Sow seeds from March in seed trays and place in light at a temperature of 18°C. Sow in situ from mid April and thin to 30x30 cm. Growing instructions: Transplant seedlings into modules or pots and plant into cold frame greenhouse or outdoors. Lettuce requires a fertile moist soil. Planting distance 30x30 cm. Average contents: 300 seeds.