Sunflowers have very few requirements, but they do prefer 6 to 10 hours of direct sunlight and even more for bigger growth. Sunflowers are heavy feeders, so it's best to plant them in compost enriched soil. Make sure to plant them after danger of frost.
Sunflowers have a very short growing season. They can grow 12 inches a day, because of how well they harness the sun's energy. Sunflowers faithfully follow the sun in their bud stage. After pollination, the disk faces down and east permanently to protect the seeds from solar radiation.
Sunflowers are bright and cheerful which makes them the happy face plant of the world.
Their universal appeal to gardeners may be only because, just looking at them makes you happy.
