Rubia tinctoria L.
Plant Family: Rubiaceae
Madder is a perennial climbing plant with evergreen leaves and small pale yellow flowers. The roots can be over three feet long, and are usually harvested in the second or third year of growth. Considered an ancient or heirloom dye plant; madder has been used throughout history for the brilliant orange and red hues it can produce.
Alizarin and purpurin
The root is utilized as a natural orange to red dye. With the help of a mordant (usually alum), madder is suitable to dye both plant and animal based textiles.
The alizarin and purpurin constituents in madder root create rich colors ranging from orange to bright red. Textiles dyed with madder have been discovered in archaeological sites, tombs, and graves dating back to the ancient Egyptians and the Mohenjo-daro site. A decline in the use of madder as a dye occurred in the discovery of the insect based dyes cochineal and lac; with the increasing interest in natural plant based dyes madder root is once again gaining popularity. Due to insufficient evidence madder has no medicinal applications today.
Specific: No known precautions.
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This information is not intended to diagnose, treat, cure, or prevent any disease.