Yarrow, Danish (Organic)
Achillea millefolium. Perennial.
Sometimes our penchant for seed saving goes a little too far – such is the case with Danish Yarrow. We saved seed from a bunch of plants growing along the roadside while out exploring the ruins of a 14th century castle about 12 miles from Aarhus, Denmark, during the first days of our Seed Ambassadors Project trip in 2006. A patch of this perennial now grows in the backyard, in deep shade (though it prefers sun), where its feathery grey leaves make a nice ground cover for most of the year. Yarrow is also an important herb in biodynamics; its lacy white flowers are used to make prep 502, to stimulate potassium, silica and selenium in the soil. Slowly spreads via roots and shattered seed, grows well even in poor soil.
Direct sow seeds very shallowly in spring, 3 weeks before last frost, or sow indoors 10 weeks before last frost. Germination may be slow and erratic. Thin or transplant to 6” in all directions. Grows well in full sun and dry, rocky ground. Perennial to zone 4. Will self-seed and spread by rhizomes.
Collect seeds from seed heads that are fully dry. Thresh by hand, winnow or screen to clean. Some cross-pollination may occur, isolate from varieties of the same species by 1/4 mile.
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