Sunflower Seeds - Mongolian Giant - ORGANIC

$3.25

Expected to be back in stock by January

Helianthus annuus

ORGANIC. Flower stalks can reach a whopping 14' tall in 4 months! Huge 16-18" heads bear some of the finest eating seeds we've tried. This sunflower produces the kind of blossoms that will win you a blue ribbon in the county fair! Direct seed in full sun after danger of frost. Summer-fall blooming. Annual.  

  • Planting Information
  • Growing Information


 

Approx. Seeds per Packet 
 
Average packet weight 
 
Seeds / gram 
 
Average seed / oz
 
14
 
1.75 grams
 
8240
Planting SeasonIdeal Soil TempSunFrost Tolerance
After Last Frost65-85°FFull SunFrost Sensitive
Sowing MethodSeed DepthDirect Seed SpacingDays to Harvest 
 
Transplant or Direct Seed1"4-16"90-100
 
Mature SpacingDays to SproutProduction CycleSeed Viability
8-12"5-12Annual4-6 years

Site Selection

 

Sunflower is a frost sensitive annual that prefers full sun and well-drained soil with low to moderate moisture. Drought tolerant once established.

 

Planting

 

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.