Detail of the inside of a sunflower, Boulder, Colorado
© Peter Dennen/Aurora Photos
Detail of the inside of a sunflower, Boulder, Colorado
There’s a minor myth about sunflowers that persists to this day: That during the course of the day, a sunflower turns to follow the sun so that the plant’s open petals are always exposed to maximum sunlight. That phenomenon is called ‘heliotropism’ and it is common in many plants. Immature sunflowers do exhibit heliotropism, but by the time the plant is in full bloom, as seen in this photo, that behaviour stops.
Related Images
Today on Bing
Laguna de Torrevieja, Alicante, Spain
Jul 25, 2023
An aerial view of Brighton Pier, East Sussex
Jul 25, 2022
Disko Bay, Ilulissat, Greenland
Jul 25, 2020
Jane's Carousel in Brooklyn, New York, USA
Jul 25, 2019