ACHILLEA (Yarrow) Compositae A. species
HABITAT: Europe and the Orient. Hardy Zone 3-10, except species A. ageratum USES: Border, rock garden, specimens, cut flowers, dried flowers.
SEED GERMINATION AND CULTURE: Sow seeds in late winter. Spread moist Grow Mix even with the top of a shallow container (Jiffy Seed Flat). Sow seeds in shallow rows and cover to their thickness. Bottom water and place in cool location about 60°F. Keep moist, never allow to dry out. Outdoors: Sow seeds in spring, which is preferred, or early fall where winters are mild. Sow seeds a cold frame or a raised, protected bed. Cover the seeds 3-4 times their thickness. Firm the soil and keep moist until seedlings emerge. Then water seedlings as required. When roots emerge from peat pots side, plant in a warm, well-drained location.
SPECIED: A. ageratum (Sweet Yarrow)
A. millifolium (Common Yarrow, Milfoil)
A. ptarmica (Sneezewort)
A. umbellata (Umbel Yarrow)
DISEASES: Mildew, Botrytis Blight: Use an approved fungicide such as Benlate to control. Proper drainage will prevent most root diseases.
PROPAGATION: Cuttings (Mid summer), division (spring), and seeds.