Any good garden soil will do, but the best crops are obtained after deep digging and liberal manuring. For early crops sow in pots under cover in April and plants out mid May, protecting against frost. Alternatively sow outdoors from April onwards, protecting early crops with cloches until frost danger is past. Sow 5-7.5cm (2-3") deep and 15cm (6") apart in double rows 30cm (12") apart. Allow 1.5m (5') between each double row. Thin resulting plants to grow on about 30cm (12") apart. Stake the plants as soon as possible after germination. Harvest August-mid October. Plants reach a height of 1.8-2.1m (6-7'). Double row 4.5m (15'), except where stated.