Giant Sunflower Seeds for Planting Heirloom & Non-GMO
Mammoth Grey Stripe Sunflower Color: Bright yellow sunburst petals with deep yellow-orange seeds and deep green foliage.
Growing Info:
| Hardiness Zone: | Annual; Zones 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 |
| Days to Maturity: | 90-110 |
| Days to Germination: | 4-10 |
| Seeding Depth: | 0.5 inches |
| Plant Spacing: | 18 inches |
| Row Spacing: | 18 inches |
| Plant Height: | 108-114 inches |
| Growth Habit: | Upright stalk with a large flower head on top. |
| Soil Preference: | Average, rich, loamy, and well-drained soil. |
| Temperature Preference: | 50-85 F |
| Light Preference: | Full Sun |
