The chain of hearts (Ceropegia woodii) belongs to Asclepiadaceae (the Milkweed family). It is an evergreen trailing vine that is native to South Africa, Swaziland, and Zimbabwe. This herb grows on the rocky places, and can reach up to 2-4 m in length. The leaves are heart-shaped, deep green to pale green, and succulent. The deep purple flowers bloom from June to August. This herb develops a woody caudex at its base with age.