Originates from the Andes and cultivated in Central America. Suppresses couch grass, high in vitamin C, companion to parsley. Prefers open sunny positions. Sensitive to frosts. Water in furrows rather than overhead to reduce disease, declines if waterlogged. Does well on light to heavy soils with good drainage and high organic and phosphorus. Sow anytime in frost free areas, can sow indoors 5 weeks before transplanting in cooler areas or after last frost.