15 seeds per packet. A magnificent and rarely grown, perennial species originating in central Europe and southern Russia. Produces large, finely-divided, ferny leaves and remarkable, almost cauliflower-like, white and yellow umbels on thick, erect stems. Fantastic plant for insects. Height 1 metre. Flowers from July to August. Full sun to part shade in well-drained soil. Warm germinator. Do not cover small seeds with soil.