Vinca or Periwinkle is a prolific heat and drought tolerant annual, perfect for hot, dry areas. It’s easy to grow, and requires little or no attention. This plant is known by three names: Vinca, Periwinkle (or Madagascar Periwinkle), The plants are grown for its attractive glossy, green foliage, as well as its flowers. Flowers bloom all summer, and up to frost. Common colors include white, rose, pink, and red. Vinca is commonly used for borders, edging, and ground cover or bedding plants. Plants grow 1-2 feet tall.