Lettuce seeds : Iceberg : Webbs Wonderful Ref: TM01400463 SowingSow thinly from spring to mid summer 6mm (¼in) deep in drills 38cm (15in) apart. A moist well drained soil which has had plenty of compost during the previous autumn is best. In very hot weather it is best to water the soil before sowing and to make sowings during the early afternoon.GrowingThin out gradually to 30cm (12in) apart.Aftercare Harvest when the head feels firm when gently pressed. The heads keep well in a fridge if they are wrapped in polythene film.Floweringcropping80 DaysPlant typeVegetable Price: £1.29 Quantity: