Long-lived polycarpic perennial
Europe to Iran; Naturalized and Weedy in N. America
Roots yield dye in shades of red. Flowers yield yellow on wool and provide coloring for cheeses.
Source of plant
Perennial reaching 3' in height with somewhat woody base; stems often decumbent; leaves in whorls of 6 to 8, linear, to 1/2" long, bristle-tipped, flowers yellow, borne throughout the summer, fruit smooth.
USDA Hardiness Zone
other ethnobotanical uses, fragrance