Lettuce VALMAINE 250 SEEDS £1.70 Quantity: at £1.70 each Add To Basket Forms upright heads with long dark green crisp leaves. Sowing instructions: Sow mid February to mid April for early summer harvest and from the end of May to mid July for autumn harvest. Also suitable for baby leaf production. Growing instructions: Planting distance 25x25 cm. Average contents: 250 seeds.