When used to dye natural fibers, fresh flowers yield a wide range of colors from lilac, purple, mauve, green, brown and black depending on the pH of the dye bath as well as the metallic fixative used.
Source of plant
Plant Delights, Romence Gardens & Greenhouses
A 4' tall sub-shrub with fine textured green foliage, often with a purple blush. From midsummer through early fall, the plants are topped with large burgundy-red flowers.
USDA Hardiness Zone
flower color, other ethnobotanical uses