Mercedes Cannon & Megan Aiello
Light Requirement: Sunflowers need full sun to grow properly.
Temperature requirements: Sunflowers can grow at any temperature above 39.
Sunflowers take about 10-14 days to germinate.
Sunflowers are planted into the ground at a depth of 1 to 3.5 inches.
The seed spacing of sunflower seeds are 2 to 4 inches apart.
The row spacing of sunflower seeds are 3 feet apart.
The red spectrum of light is the most effective type of light to grow sunflowers.