Machaeranthera tanacetifolia (Tansyleaf Tansyaster)

30 (50)cm, Tansyleaf Tansyaster is an annual to biannual with numerous bright purple flowers with a brilliant yellow center in summer above deeply divided leaves. It is native of dryish, sunny sites in central and southwestern USA. For any rich, well drained soil in a sunny spot. VII-VIII.
20 seeds per package.