Do sunflowers turn to face the sun? The fields of newly opened sunflowers that we passed in the Dordogne were resolutely stationary throughout the day.
Meanwhile, the first sunflower in our garden unfurled its own petals, to greet us on our return.
A little research reveals that sunflowers only display heliotropism while in bud. As soon as the flowers bloom, the stems become stiff and no longer turn to follow the trajectory of the sun across the sky.
Sunflower: Giant Russian