They used fibers from Mountain dogbane, showy milkweed, wild grape, and soap plant for cordage. Fibers from dogbane and milkweed were used to fashion yarns and baskets. They most commonly used hemp dogbane, tule, sagebrush, or willow bark. Cascabela is a genus of flowering plants in the dogbane family, Apocynaceae. As a caterpillar, it feeds on honeysuckle, dogbane, and several types of fruit trees. The moth specializes on plants of the dogbane family, Apocynaceae. It is also a larval host for the dogbane tiger moth and the queen butterfly. Agricultural products include corn, cotton, wheat and others as well as sword-leaf dogbane. Dogbane contains cymarin, a cardiotonic agent formerly used to treat cardiac arrhythmia in humans.