The way a young sunflower turns its bright yellow head to follow the movements of the Sun across the sky each day can be quite dramatic, in terms of plant activity. Now scientists have been surprised ...

Loved for their bold and cheery presence, sunflowers are one of the most widely recognised garden blooms. Instantly recognisable for their tall straight stems topped with circular flowerheads and ...

A sunflower’s ability to track the sun east to west during the day, and to face east again before the next sunrise, relies on multiple types of photoresponses, according to a new study publishing ...