90-110 Days to maturity. Helianthus annuus. Red Sun Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Heirloom. Red Sun seeds grow one of the summer's rarest and most unique blooms, stunning 60-72 inch tall branching sunflowers with eye-catching 5-6 inch heads of smoky burgundy, bronze, and copper. Red Sun sunflowers are grown for their rich, warm petals and chocolate-seeded centers that promise to keep the birds fed and coming back all season long. Red Sun seeds mature in as early as 90 days and make a quick and fun grow for novice gardeners to try out in the back of a garden. Approximately 500 seeds/ounce.