Helianthus annuusMagnificent 10" blooms with bright yellow petals on 2' tall plants. Excellent cut flower. Direct seed in full sun after danger of frost. Summer to fall blooming. Annual.
|Approx. Seeds per Packet
||Average packet Weight
||Seeds / gram
||Average seed / 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"||60-70
|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.