Rattlesnake master (Eryngium yuccifolium) is a unique wildflower with leaves like a yucca, and unique 'golf ball' flowers like no other plant. Makes an excellent focal point in the garden when planted individually or in groups. Native Americans brewed a tea from the root as an antidote to rattlesnake venom. Other common names include Button Snakeroot, Yucca-leaf Eryngo, Corn Snakeroot, Rattlesnake Flag, and Rattlesnake Weed. Hardy to Zones 4 - 9.