Native to Madagascar, India, and tropical Asia, Madagascar periwinkle blooms continuously in hot weather, thriving in both humid and dry heat. Plant Type – Perennial; Flower Colour – White, Pink, Apricot, … Usually grown as an annual. The optimum temperature for germination is 20–25°C, and the germination rate is in general over 95%. These are plant that do cope with dry conditions, however perform better with a little water.. Summary. They reach about 30 to 60cm in height and have flat flowers of white or pink. Best grown in a warm position in a humus rich moisture retentive soil. Vinca, also known as periwinkle or myrtle, is a shade-loving perennial that produces lavender, blue or white flowers while Catharanthus roseus (Vinca rosea), also known as Madagascar periwinkle, is a sun-loving perennial that produces white, pink or bi-color blooms. Catharanthus roseus, does an excellent job tolerating the hot temperatures of the summer, and is also able to bear the extremes of drought and heavy rainfall. When referring to vinca, gardeners should be aware of this unique situation--there are two plants that share the same name. Catharanthus roseus (C. roseus) is an important medicinal plant distributed in many countries. Catharanthus roseus Care. Catharanthus roseus (Vinca) also known as the Madagascar periwinkle or rosy periwinkle or Sadabahar is grown as an ornamental plant in the garden. click on a thumbnail to view an image, or see all the Catharanthus thumbnails at the Plants Gallery Steve Hurst. Catharanthus roseus has anti-cancer effects and is traditionally used to treat diabetes, It is a popular ornamental plant in East Africa. Description. C. roseus is a fast-growing perennial plant that spreads principally by seed. Periwinkle (Vinca minor) is an excellent evergreen groundcover with dark green foliage. Seed may remain dormant for several weeks after maturity. It has attracted increasing attention due to it being shown to possess a range of phytochemicals with various biological activities such as antioxidant, antibacterial, antifungal, antidiabetic and anticancer properties. Catharanthus roseus (Vinca) Medicinal plant benefits and images. C. roseus ‘Albus’ bears white flowers. Oblong to ovate leaves are opposite, simple, ½ to 2 inches long, glossy, with a short petiole. Remarkably, vinblastine and vincristine isolated from this plant were the … The perennial periwinkle should not be confused with the bedding plant, Madagascar periwinkle (Catharanthus roseus). They are also known by the names of Annual vinca or Madagascar periwinkle.. Seed may remain dormant for several weeks after maturity. After the periwinkle was introduced to the southern United States, it has now become an ornamental plant grown in flowerbeds, serving as a great boarder plant. Catharanthus are bushy perennials that are usually grown as half hardy annuals by gardeners.. Provided by ARS Systematic Botany and Mycology Laboratory . Environmental and other impacts Catharanthus roseus is most commonly associated with coastal habitats (e.g. Drought-resistant, compact perennial shrub, with glossy leaves and pink flowers with red centres throughout summer. How to Grow Catharanthus Plants in your Garden Gardener's HQ Guide to Growing Annual Vinca. This is a 1m tall perennial herb with oppositely arranged leaves. Various hybrids are available in a wide range of colours Synonym: Vinca roseus / Vinca rosea Botanical Pronunciation: kath-uh-RANTH-us ROE-zee-us. Is an important Medicinal plant distributed in many countries excellent evergreen groundcover with dark green foliage Steve. 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