Agrostemma githago, or corn cockle, is a hardy annual with slender, hairy stems, narrow gray-green leaves, and large, solitary flowers that are typically pink to purple, though white varieties exist. The sepals are longer than the petals and have five narrow, pointed teeth. The seeds require darkness or very light covering to germinate, with optimal germination occurring in moist soil at temperatures between 60-70°F (16-21°C). 
Description
Height: Grows up to 100 cm (39 inches) tall.
Stems: Erect and covered in fine hairs.
Leaves: Narrow, lanceolate, and gray-green.
Flowers: Large (up to 5 cm or 2.0 inches across), solitary, and usually pink to purple with a few discontinuous black lines on each petal. Sepals are longer than the petals and have a rigid, ribbed tube with ten ribs.
Habitat: Fields, roadsides, and other disturbed areas.
Note: The seeds and plant are poisonous to livestock and humans. 
Germination
Optimal temperature: 60-70°F (16-21°C).
Sowing: Direct sow seeds in the fall or spring as soon as the soil can be worked.
Planting depth: Sow seeds shallowly or on the surface, as they need light to germinate; cover with a very thin layer of soil or just press them firmly into the soil.
Moisture: Keep the seedbed consistently moist.
Patience: Germination typically takes 7-14 days but can be longer in cooler conditions. 
 
Average : 4800 seeds/oz
Investemnt :  16.00/oz