Annual vinca, also goes by Madagascar periwinkle and other common names, tolerates the heat and humidity of the southeast. Full sun and warm soil temperature is required for this species to thrive and it is tolerant of low fertility soils and is drought tolerant. Flower colors come in shades of white, pink, red, and purple. Plants grow 6 to 12 inches tall and 8 to 24 inches wide depending on cultivar. Improved cultivars provide an abundance of flowers on stocky plants and disease resistance, which is very important with this species. Improved cultivars include plants in the Cora series, Mediterranean series, Titan series, and many others.

Exposure: Full sun to part shade
Soil: Well-drained, slightly dry soil
Hardiness: Use as an annual