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Approx. Seeds per Packet | Average packet weight | Seeds / gram | Average seed/ oz |
35 | 1.75 grams | 20 | 560 |
Planting Season | Ideal Soil Temp | Sun | Frost Tolerance |
After Last Frost | 65-85°F | Full Sun | Frost Sensitive |
Sowing Method | Seed Depth | Direct Seed Spacing | Days to Harvest |
Transplant or Direct Seed | 1" | 4-6" | 70 - 80 |
Mature Spacing | Days to Sprout | Production Cycle | Seed Viability |
8-12" | 5-12 | Annual | 4-6 years |
Sunflower is a frost sensitive annual that prefers full sun and well-drained soil with low to moderate moisture. Drought tolerant once established.
Direct seed outdoors once the danger of frost has passed. Optimum soil temperature for germination is 65-85ËšF. Sow 1" deep and 4-6" apart. Seeds will sprout in 5-12 days. Thin so mature plants are 8-10" apart.