Recognized by a spiny collar (bracts) around a raspberry-like flower head.
Grayish green leaves on stout stems in a stance that is angular yet erect. Thistle
like flowers in all shades of blue...from blue-green, navy to steel blue and sky blue.
HISTORY: Native to damp grasslands of South America. Cultivated in Europe since 1567, and originally grown for traditional healingpurposes. The roots were used to make tonic water and were alsofrequently candied.