Allie & Wilson
Picture of Sunflower seedling.
Picture of adult Sunflower.
Light requirements: Full sunlight for seeds to germinate.
Temperature requirements: Sunflowers need warm soil for germination to occur. The soil temperature must be 70 to 80 degrees Fahrenheit.If soil content is to cold or moist then the root system will begin to rot. During the plant's most important growing period, it is essential for the soil to be watered before and after it's first blooming period.
Depth: 1-2 inches deep.
Spacing: In rows, 6 inches apart.
Days to Germination: Sunflower Seeds takes 7-10 days to germinate. Once the plant is 4-5 weeks old then it is ready to be dug up and transplanted.
Special treatment: Fertile Soil that is regularly moist.