Sunflower fields in Karnal, Haryana. Sunflowers are grown to harvest a light cooking oil in India. It is said to be healthy for the heart too. Sunflowers (Helianthus annuus) most commonly grow to heights between 1.5 and 3.5 m (5--12 ft). Scientific literature reports that a 12 m (40 ft), traditional, single-head, sunflower plant was grown in Padua in 1567. The same seed lot grew almost 8 m (26 ft) at other times and places, including Madrid. During the 20th century, heights of over 8 m have been achieved in both Netherlands and Ontario, Canada. Sun flowers have a type of phototropic response called heliotropism (sun turning); the leaves and flower heads of young sunflowers follow the sun and their orientation therefore changes from east to west during the day. This footage is part of the professionally-shot stock footage archive of Wilderness Films India Ltd., the largest collection of imagery from South Asia. The Wilderness Films India collection comprises of thousands of hours of high quality broadcast imagery, mostly shot on HDCAM 1080i High Definition, HDV and Digital Betacam. Write to us for licensing this footage on a broadcast format, for use in your production! We pride ourselves in bringing the best of India and South Asia to the world... wfi @ vsnl.com and firstname.lastname@example.org.