Sunflower, Mongolian Giant
- Annual flowers with edible seeds
- Plants grow to 12-14 feet tall
- Flower heads grow to 16-18 inches across
- Seeds grow to 1.5 inches long
- 90 days
(H. annuus) One of the largest-seeded varieties available to gardeners, seeds up to 1½" long. Great for eating. Plants can grow 12-14' tall with gigantic yellow heads reaching 16-18" across! Annual, 90 days.
Learn to Grow it
Direct Seed: 6" Apart
Direct Seed: 1/2" Deep
Germination: 10-14 Days
Rows Apart: 24-36"
Instructions - Sow seeds outdoors after last frost. Sunflowers prefer full sun to light shade and well-drained rich soil. Provide support for tall plants.