Description Achillea ‘Summer Pastels Group’ Yarrow. A vigorous, mat-forming perennial which has linear to lance-shaped, dark green leaves. From early to mid-summer the white, pink, and yellow to orange and red flowerheads are borne in flat corymbs. Grow in moist but well-drained soil in an open site in full sun, but will tolerate a wider range of conditions. It it will reach a height and spread of 30-60cm.
