sunflower
The common sunflower (H. annuus) is an annual herb with a rough hairy stem 1โ4.5 metres (3โ15 feet) high and broad, coarsely toothed, rough leaves 7.5โ30 cm (3โ12 inches) long arranged in spirals. The attractive heads of flowers are 7.5โ15 cm wide in wild specimens and often 30 cm or more in cultivated types.
