- You will get 300+ Seeds of Purple Zinnia Flower Seeds. - Seller Notes ?Zinnia elegans. U.S. Grown seed. Test date 1/23-Germination 96%. Packed 1/23.?. - Planting Time: 7 Weeks. - Soil Type: Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (F): 11 (40 to 50 F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - Zinnia "Purple Prince". Large 4-5" Dahlia type fuchsia flowers. Attracts butterflies, bees and hummingbirds. Excellent cut flowers. Cut one flower and the plant grows back two more. Big bright blooms all summer into fall. About 30" tall. Does well in the garden or containers. Very easy to grow from seed. Just add water and stand back! Blooms in about 7 weeks.300+ Quality seeds per order. - Zinnia Elegans. - Annual. - Full Sun. - Spring, soil temp 70F+. - SOW 1/4"deep, 3 " apart. Keep moist. - Germinates in 7 to 14 days. - Medium water. Light fertilizer if needed. - Flowers are Purple. Blooms from early summer through late fall.