- You Will Get 100+ Seeds of Zinnia California Giant Mix Colorful Blooms Flower Seeds. - Zinnia California Giant Mix Flower Seeds. - 100+ Seeds. - Maturity: 65 Days. - Plant Height: 30". - Plant Spacing: 8-10". - Planting Depth: 1/4". - Plant In Sun. - Soil Type: Loam, Peat, Sand. - Sunlight: Full Sun, Medium Sun. - Watering: Medium.