Dyeing Yellow with Dyer's Chamomile — The Golden Flower of Mediterranean Dye Gardens

Use 100% WOF of dried dyer's chamomile flower heads. For 100 g of wool, weigh out 100 g of dried flowers. Harvest flowers when fully open and at peak golden colour — the centres should be bright yellow, not yet fading to brown. Dry the flower heads in shade on a rack for 5-7 days until they are papery and brittle. The dried flowers can be stored in paper bags for up to a year without significant loss of dye strength.

Place the dried chamomile flowers in a dye pot with 4 litres of warm water and soak for at least one hour. The water will turn a pale golden-yellow within minutes. Flower-based dyes generally release colour faster than bark or heartwood dyes because the cell walls are thin and fragile. Pressing the flowers below the water surface ensures they are fully saturated and extracting evenly.

Bring the pot to a gentle simmer (75-85°C) and hold for 30-40 minutes. Do not boil — high temperatures diminish the brightness of flavonoid yellows. Stir occasionally. The liquid will deepen to a rich golden-yellow. The flower heads will lose their colour and turn pale as their pigment transfers to the water. A second extraction in fresh water is possible for a lighter dye bath, though the first extraction holds most of the dye.

Strain the dye liquor through a fine mesh strainer into a clean pot. Squeeze the spent flowers gently to extract all remaining liquid. Chamomile flower fragments are soft and can tangle in wool if left in the dye bath — strain thoroughly. The strained liquor is a clear, warm golden-yellow.

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 80°C over 15 minutes, then hold for 45 minutes. Turn gently every 10 minutes. The alum-luteolin complex produces a warm, bright yellow with good depth. Without mordant, the colour is much paler and less permanent. The wool will be a vivid golden-yellow when removed — brighter than goldenrod but not quite as intense as weld.

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 clear. The final colour is a warm, sunny yellow — cheerful and clear. Dyer's chamomile has moderate to good lightfastness — better than most flower dyes, suitable for garments and household textiles that receive moderate sunlight. Dry in shade.