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Well known as a source for high quality yellow dye since ancient times; pigments used for oil paint as well as dyeing wool, cotton, and silk up until the Middle Ages. The yellow pigment is found primarily in the seeds, although can also be extracted from the leaves. Deep taproot discourages relocation. Sow in a sunny spot, where it will get lots of moisture. Ht 24-60in (60-180cm).
Hardiness zone
5-9
Germease
Easy
Sow times
Spring
Product use
Medicinal
Duration
Annual or Biennial