Outsidepride White Vinca Periwinkle Ground Cover Plant Seed - 4000 Seeds Outsidepride is a family owned U.S. Company. No other company on this listing is selling our seed. USDA Zones: 3 - 10 Height: 8 - 10 inch annual Bloom Color: White Sowing Rate: 2 - 3 seeds per plant or approximately 2,000 seeds covers 50 square feet