The Walled Garden
A hardy evergreen perennial with sword-shaped, spiny-edged, blue-grey leaves and branched stems, up to 1.7m bearing small, egg-shaped white flower-heads in late summer,
Site and Care:
Grow in dry, well-drained, poor to moderately fertile soil, of any type, in full sun. Cut back after flowering. Protect from winter wet. Propagate by seed or division in early spring.