Dyeing Red with Lady's Bedstraw — The Wild Madder of Northern Europe

Use 200-300% WOF of dried lady's bedstraw roots. For 100 g of wool, weigh out 200-300 g of dried roots. The roots are thin, wiry, and reddish-brown — much finer than madder roots. They are available dried from specialty dye suppliers, or can be harvested from wild plants in autumn when anthraquinone content peaks. Chop into 2-3 cm lengths to increase surface area for extraction.

Place the chopped roots in a dye pot with 4 litres of warm water and soak overnight (8-12 hours). The water will turn a deep reddish-orange as the anthraquinones dissolve. Lady's bedstraw roots are fibrous and release dye more slowly than madder — the long soak is essential. By morning, the liquid should be a rich orange-red.

Raise the temperature slowly to 70°C and hold for 60 minutes. Like madder, lady's bedstraw anthraquinones are heat-sensitive — temperatures above 80°C shift the colour from coral-red toward dull brown. The same temperature discipline applies: slow heating, careful monitoring, never boil. Stir occasionally. The liquid will deepen to a vivid red-orange.

Strain the dye liquor through a fine mesh strainer into a clean pot. Press the roots to extract all remaining liquid. The thin, fibrous roots can tangle with wool — strain thoroughly. The strained liquor should be a clear, warm red-orange.

Pre-wet the alum-mordanted wool in lukewarm water for 15 minutes, squeeze gently, and lower it into the dye bath at room temperature. Slowly raise to 70°C over 20 minutes, then hold for 60 minutes. Turn gently every 10 minutes. The wool will develop a warm coral-red to orange-red — lighter and more orange than madder, but with the same excellent permanence. The anthraquinone-alum complex is nearly identical to the madder-alum bond, giving lady's bedstraw comparable lightfastness.

Turn off the heat and let the wool cool in the dye bath overnight. Remove, squeeze gently, and rinse in lukewarm water until the runoff is mostly clear. The final colour is a warm coral-red to salmon-orange — a shade unique to Galium species that cannot be easily replicated from other dye plants. Lightfastness is excellent, approaching madder. This was the red that coloured Viking-age textiles across Scandinavia, centuries before Mediterranean madder became available through trade. Dry in shade.