One of those special vegetables that taste at their best when picked from your own plot and served within hours. Raising plants from seed to harvest takes 3 years but it is well worth the wait. Well drained soil is essential. Sow in a nursery bed in April, transplant to permanent site the following April in trenches 20cm deep, 30cm wide with 60cm between trenches. Cover the plants with 5cm of soil and gradually fill the trench as the plants grow. Cut back the foliage when yellow in autumn. Harvest spears in the third season. Stop harvesting spears in mid-June.