Sunflowers most commonly grow to heights between 1.5 and
3.5 m (5–12 ft). Sunflowers in the bud stage exhibit heliotropism.
At sunrise, the faces of most sunflowers are turned towards
the east. Over the course of the day they follow the sun from
east to west, while at night they return to an eastward orientation.
Sunflower Flower Coasters