How to Sow
Germination is easy, just cover the seeds with a thin layer of medium and keep moist. Cardoons produce the occasional albino plant, so thin out the odd-looking plants right away as they wont perform well.
How to Harvest
If you want your cardoon stems blanched, wrap them in paper or heap straw over them for about month before harvest. Flower buds are harvested before they begin to open. Cardoons discolour quickly, so use right away and rub with a slice of lemon to prevent browning.