Producing large, purple-tinged tender heads of up to 13cm (5in)diameter, and offering greater tolerance to heat and cold than Green Globes. More productive in the first year after planting, and over the following 3-4 years.Sow seed singly in 7.5cm (3in) pots on the surface of a good free-draining, damp seed compost, and cover with 6mm (¼in) of compost or vermiculite. Seal container inside a polythene bag and keep at 18-20°C (64-68°F) until after germination which usually takes up to 21 days. Best sown under glass, but can be sown outdoors in April. Transplant during June.When well grown, gradually acclimatise plants to outdoor conditions for up to 14 days before planting out. Plant outside after all risk of frost, 90cm (36in) apart. Water well in dry weather and feed with liquid fertiliser every 2-3 weeks. Cut heads just before the flowers open, with 15cm (6in) of stem. Harvest sparingly in the first season. Plants will need some winter protection: cover the crown of the plant with bracken or straw.SERVING SUGGESTION: Wrap whole artichokes in foil, bake and serve with melted butter.