Sun Orientation of Plants
Date: Around 1999
Hi!My name is Yati.I urgently need to know whether is it true that
sunflowers faces the sun in the day?Also,does this mean that it will
always face the sun?Thanks for your help!
The mechanism is called "heliotropism" or sun-tracking.
Anthony R. Brach, Ph.D.
During a trip to France in 1998, we noticed that sunflowers growing en masse
in a field all were facing east. Since we did not see any others facing
elsewhere during the day, I assume they do always face east. I have not
seen sunflower fields anywhere else to confirm or dispute this finding,
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Update: June 2012