Sunflower head

The sunflower head has been open for a few weeks now. This plant is standing at about 8 feet tall. There are two other sunflowers grown from the same seed stock, but I'm not sure if I planted them too close to the larger plant as they are 1/3rd the size. Maybe there's some competition for nutrients going on underground? Or, they're just odd hybrids?

The sunflower is actually composed of many small flowers called "florets" where the seeds will eventually mature. The future seeds are white in this close-up picture. Read more about Sunflowers!