Wild quinine (Parthenium integrifolium) It is believed that Native Americans and early settlers used wild quinine as a medicinal remedy for fevers. Reaching heights of 20 - 40 inches, wild quinine blooms from July to September. photo by Todd Bannor A member of the daisy family, the flowers of wild quinine are shaped in an intricate pattern of 5 tiny rounded rays. video photo by Cynthia Gehrie