Sea Holly. A perennial with spiny, mid-green leaves, marbled with white veins. Branched stems of cone-shaped, grey- blue flowers surrounded by spiny silvery white bracts. Height 30cm to 50cm, sprea..

A rarely offered form from Mexico. Three dimensional spiny rosettes of green leaves with silver markings. Stiff flower stems in summer to 50cm tall hold white thimble shaped thistle flowers. Thrives i..

Sea Holly. A perennial with spiny, dark green, basal leaves. Branched stems of large, cone-shaped, intense blue flowers surrounded by spiny blue bracts.  Height and spread to around 75cm x 50c..

Sea Holly. A perennial with spiny, dark green, basal leaves. Branched stems  hold cone-shaped blue flowers surrounded by huge intense metallic blue bracts. Spectacular when in flower and good ..

Rosettes of spiny toothed grey green leaves with branching stems holding greenish white flowers. Best in any well drained soil in full sun. Height 1.2m, spread 60cm...