Helianthus annuusBeautiful 5-6' tall plants. Velvety, multi-headed deep rust-colored 4-6" blooms with mahogany centers. Can be staked for support. Good fresh market cut flowers. Direct seed in full sun after danger of frost. Summer to fall blooming. Annual. (1.75 Gram Packet)
|Approx. Seeds per Packet
||Average packet weight
||Seeds / gram
||Average seeds / oz
|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"||75-85
|Mature Spacing||Days to Sprout||Production Cycle||Seed Viability|
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 65-85˚F. Sow 1" deep and 4-6" apart. Seeds will sprout in 5-12 days. Thin so mature plants are 8-10" apart.