Thompson & Morgan Cabbage Summer Jewel F1 Hybrid

This summer cabbage is very slow to heart, remaining leafy at 350g (12oz) for regular harvests of compact 30cm (12in) leaves. The smooth, dark green leaves carry no stalk, leading to quicker prep and less wastage in the kitchen. Cook as traditional ‘greens’ or shred for use in salads, stir-fries and soups.

How to sow

Sow indoors from February to May, sow at a depth of 12mm (½in) in trays of free-draining, seed sowing compost and cover with a layer of vermiculite. Place in a propagator or seal container inside a polythene bag at a temperature of 20-25°C (68-77°F) until germination which takes 4-7 days. Alternatively direct sow outdoors from late March into a well prepared seedbed. Sow at a depth of 13mm (½in) and distance of 23cm (9in) between rows.

How to grow

Once germinated, grow on in cooler conditions until all risk of frost has passed and plants have 2-3 true leaves. Plant at a distance of 50cm (20in) apart and cover with a protective netting or fleece to prevent attack from birds and insects. Place a collar around the stem of each plant to prevent cabbage root fly attacks.

Additional information

• Harvesting period: July, August, September, October
• Pack contents (approx.): 30 seeds