Pak Choi
£1.95 Average 400 seedsClassic pak choi with dark green leaves and succulent white central stems. It's best sown from late July onwards to avoid the summer heat that can make it bolt, and the nibblings of flea beetles that can pepper the leaves with holes. Sow earlier in the year if you like, but you'll need to protect the micromesh netting and keep it well watered.