Vincas
How to Take Care of Vinca Flowers By Jenny Harrington The plant commonly called vinca (Catharanthus roseus) grows as a short, upright bush, covered in small pink or magenta flowers. It grows as a perennial in U.S. Department of Agriculture plant hardiness zones 10 through 11 but can be treated as a summer annual elsewhere. Vinca’s close cousins, greater periwinkle (Vinca major), which grows in USDA zones 7 through 9, and common periwinkle...
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