Caustic Vine (Cynanchum Viminale) is a perennial vine in the Apocynaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 9-11. This plant is toxic to cats and dogs — keep it out of reach of pets.

Cynanchum viminale is a leafless succulent plant in the milkweed family, native to West Africa, the Indian Ocean, and Western Pacific regions.