common sunflower (helianthus annuus) in the sunlight

flower yellow plant petal sunflower field nature leaf sunlight pollen sky wildflower daisy quail common helianthus annuus tall annual herbaceous native north america cultivated edible seeds oil characterized large bright heads central disk small tubular flowers turn 39aph39 sturdy hairy stem reach heights meters feet sunflowers heliotropic meaning track sun movement thrive full welldrained soil agricultural importance valued ornamental beauty ecological role supporting pollinators