Cauliflower also come in a range on non-white cultivars that let's face it makes them more appetising - orange, purple and green! Purple varieties include 'Graffiti' and 'Purple Cape' - he purple colour is caused by the presence of the antioxidant group anthocyanin, which can also be found in red cabbage and red wine. Treat the same as white caulis, watching out for white butterfly and pegging the large leaved over to protect the developing heads. Seeds are available from Diggers Club.