25+ American Giant Sunflower Seeds Add a touch of natural beauty to your outdoor space with these American Giant Sunflower Seeds. These easy-to-cultivate annual flowers grow up to 12 feet tall in medium to full sun and bloom in late summer to early fall. The yellow flowers are sure to attract bees and other pollinators to your garden. Enjoy the Mediterranean, tropical wet dry, marine west coast, humid subtropical, humid continental, and tropical wet climates that these seeds thrive in. Each packet contains 25+ seeds, making it easy to get started on your sunflower growing journey. Add these fast-growing, open-pollinating seeds to your collection today! Buy Seeds Online Organic Seeds Heirloom Seeds Non-GMO Seeds Vegetable Seeds Flower Seeds Herb Seeds Fruit Seeds Garden Seeds Seed Starter Kits Rare Seeds Bulk Seeds Indoor Gardening Seeds Seed Catalog Seed Packs for Sale Sustainable Seeds Greenhouse Seeds Seed Suppliers Planting Seeds Home Garden Seeds