Roots of this hardy perennial herb have been used for centuries to produce a red dye. Harvest roots and rhizomes of 3-year-old plants in the spring and autumn. Grow plants in full sun and average soils. Loose soils will increase root growth and make for easy harvest. Two plants will dye 4 oz of wool.
Height 2′. Spread 2′. Plants are sprawling in habit. Zones 4-9.
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