- You will get 1 Oz Seeds of Giant Cactus Zinnia Mix Flower Seeds. - Seller Notes: “Zinnia elegans. U.S. Grown seed. Test date 1/23-Germination 95%. Packed 1/23.”. - Planting Time: 7 Weeks. - Soil Type: Poor soils, Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (°F): 10 (30 to 40 °F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - Giant Cactus Zinnia. Huge 5" flowers in red, yellow, pink, purple, salmon and white. Great for cut flowers. Cut one flower and the plant grows back two. Butterflies and bees love zinnias. Blooms all summer into fall. Pretty much carefree after established. Very easy to grow. Just add water and stand back! Flowers in about 7 weeks.1 OZ = 4200+ 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 mixed colors. Blooms early summer through late fall.