Grow vibrant annual sunflowers with Ferry-Morse Sunflower Mammoth Seeds, perfect for any sunny garden. These towering beauties reach heights of 8-12 feet, adorned with large, cheerful blooms that attract pollinators and brighten landscapes. Ideal for full sun, these easy-to-grow flowers thrive in well-drained soil and bring a burst of color throughout the summer. Whether lining a fence or adding a sunny backdrop, these sunflowers are a must-have for any flower enthusiast’s garden. Ferry-Morse Sunflower Seeds are GMO-Free. Light Needs: Full Sun Plant Lifecycle: Annual Plant Category: Flowers Hardiness Zones: 2 – 11