Dipsacus fullonum
Biennial plant of the Dipsacaceae family with robust stems and lanceolate leaves that grow together forming water-filled rosettes. Features lilac or purple flowers in compact cylindrical inflorescences, historically used for carding textiles.
Prefers well-drained soil and sunny positions. Tolerates drought once established. Sow directly in the garden. Dies naturally after biennial cycle. Attractive to pollinators and wildlife.