Catharanthus roseus, Madagascar Periwinkle or Rosy Periwinkle or Vinca is a member of the Apocynaceae family of plants with a very toxic sap. It has pink flowers with five petals only. The foliage is dark green and leathery. An evergreen herbaceous sub-shrub, it is native to Madagascar.
The plant is popular in many gardens but it also is being used for medicinal purposes. It was traditionally used in Chinese medicine to treat number of ailments. More recently while it was being researched for its anti-diabetic properties it was discovered that it contains alkaloids that are now being used in chemotherapy to treat several types of cancer including childhood leukemia.
Plant Catharanthus roseus in full sun or partial shade in sandy loam well-drained soil. You can propagate by seed or cuttings. The sap very toxic if ingested. Catharanthus roseus does not withstand frost.