Yarrow (Achillea millefolium) is a dye plant that's native to North America, and has a fabulously pollinator friendly flower. The leaves of this hardy perennial are among the first things to shoot up in early spring, and can be added to the first home grown salads of the year. The flowers and plant tops make gorgeous buttery yellows and stunning olives greens. The colour has excellent lightfastness when mordanted to with alum. It's one of my favourite dye plants. In fact, I almost called my business Millefolium, after yarrow's Latin name!
Press seeds into surface of soil and keep evenly moist until germination, which can take up to 3 weeks, or direct sow in the garden in early spring.
Prefer full sun, although will tolerate some light shade. Edible young leaves. Medicinal.