A new cultivar of Achillea plant named ‘；HEARTTHROB’； that is distinguishable by basal branching, upright and spreading plant habit, fern-like foliage which is grey-green in color at time of flowering, inflorescences which consist of bright red ray flowers and yellow disc flowers forming a contrasting eye. Flowering of ‘；HEARTTHROB’； commences in late June and continues until October on plants which are 45 cm in height and 35 cm in width after 1 year of growth from an initial cutting.
