Calabrese - Spiridon F1
This is the latest maturing variety with some good frost tolerance to extend the cutting of quality heads and 'sideshoots' well into the autumn. Calabrese Spiridon produces domed heads, averaging 400-500g on erect, open plants which allow good air circulation to minimise disease. It prefers moist, rich, well-drained soil.
Sow seeds in May for the best quality crops in late autumn. Sow seeds thinly in a well prepared seedbed, 1cm deep. Transplant seedlings when large enough to handle, allowing 38cm apart each way. Plant firmly and keep well-watered until established. Net against pigeons and cabbage caterpillars.