Catharanthus roseus is a native of Madagascar and is frequently grown as an ornamental in gardens all over the world. It is also referred to as annual vinca. It also goes by the name periwinkle.Their glossy, dark green leaves contrast nicely with their five-petaled flowers, which come in appealing bright and dark colored centers and vibrant pinks, reds, or pastel purples and white.This stunning beauty will provide unparalleled allure everywhere it adorns!As Vinca assists in removing dangerous chemicals from your surroundings, you can breathe easier and more freshly. Vinca can handle little changes in temperature but prefers constant temperatures between 65 and 75°F (18 and 24°C).