60 Mammoth Sunflower Seeds Non-GMO Giant Heirloom Flower Seeds

Grow towering sunflowers up to 12 feet tall with massive 12-inch flower heads.

These Mammoth Sunflower seeds are Non-GMO, open-pollinated, and perfect for home gardens, cut flowers, or attracting pollinators.

USDA Zone: 2-11 (annual, grow in all zones)
Light: Full sun (at least 6-8 hours daily)
Water: Moderate, keep soil moist until established

Plant in spring after last frost. Sow seeds 1 inch deep, 6 inches apart, thin to 18-24 inches apart for giant blooms.