Giant Cactus Zinnias have giant, semi-double blooms 12.5-15 cm (5-6") across. The unique cactus petals roll under and twist to create a beautiful mass of eye-catching color in your garden. Zinnia elegans Product Weight: 400 milligrams / approximately 50-60 seeds Plant Type: Annual Bloom Color: Pale shades of pink, yellow, orange and red Grows Best In: Full Sun Bloom Period: July to Frost Days to Seed Germination: 5 to 7 days Seed Planting Depth: 6 mm (1/4") Growing Height: 70-90 cm (28-36") Planting Instructions: After all danger of frost, sow in open ground well exposed. Or, for earlier bloom, start indoors in flats about 4 weeks before the last frost. Cover with 1/4 inch of soil. When the plants are 3 inches high, thin or transplant. How To Grow: Zinnia Giant Cactus Flowered Mix Suggestions: Remove faded blooms to extend the growing season.