Sow in pots indoors February through September. Transplant 3-4 weeks after sprouting. May also be direct sown in early spring or late summer. Does not do well in heat. Bolts quickly if water stressed. Succession sow to extend harvest. Flowers are also edible.
Collect seeds from spring sown plants, selecting for slowest bolting. Cut seedheads when seeds are dry, thresh by hand or by dancing, winnow to clean. Isolate from other Brassica rapa species mustards by 1⁄2 mile.