A low growing dense shrub with attractive fern like foliage and large bright yellow flowers on spikes above the foliage in Summer and Autumn. Pretty in massed borders. Full sun or part shade. Most soils. Drought and frost hardy. Achillea are a well loved addition to perennial gardens and rightly so. They are sun loving and hardy in most soils. Frost and drought hardy but we like to give them an extra water during Summer.