19th century illustration of Rubia tinctorum or the common madder or dyer's madder, a plant species in the genus Rubia. Published in Systematischer Bi Stock Photo - Alamy
The Power of Madder Root~ Health Benefits of This Beautiful + Natural — Bennd Yoga
Madder Dye Plant - Fedco Seeds
MADDER RHIZOMES for your Natural Dyeing needs in the UK