- blue curls - any of several plants of the genus Trichostema having whorls of small blue flowers
--1 is a kind of subshrub, suffrutex
--1 is a member of Trichostema, genus Trichostema
--1 has particulars:black sage, wooly blue curls, California romero, Trichostema lanatum; turpentine camphor weed, camphorweed, vinegarweed, Trichostema lanceolatum; bastard pennyroyal, Trichostema dichotomum