Due to having a smaller core, there is more leaf per plant and heads can be harvested as small as 0.5kg ranging to 1.5kg. ‘Pretino F1’ doesn’t take up as much space as other varieties.Sow thinly direct into a finely raked seedbed at a depth of 13mm (½in).Transplant with a trowel or dibber when large enough to handle allowing 45cm (18in) between plants each way. Grows best in well-cultivated soil liberally manured the previous autumn. If the weather is dry, water in well when transplanting. Alternatively sow in modules and plant out after all risk of frost has passed.