
The colourful Periwinkle is one of the earlier known medicinal plant. Many alkaloids derived from it have anti cancer properties, such as vincristine and vinblastine. In some folklore medicine, it is also used to treat a wide range of diseases and conditions which run the gamut from inflammation, malaria, diabetes, depression to various cancers.
I plant them for their perpetual blooms of various hues and colours. I do not care much for the akaloids. The stunning visual effect is balm to the weary soul.