The Secret Life of Plants (1973) is a book by Peter Tompkins and Christopher Bird. The book documents controversial experiments that claim to reveal unusual phenomena regarding plants such as plant sentience, discovered through experimentation. It goes on to discuss philosophies and progressive farming methods based on these findings. The book was heavily criticized by scientists for promoting pseudoscientific claims.
The book was the basis for the 1979 documentary of the same name, directed by Walon Green and featuring a soundtrack by Stevie Wonder, later released as Journey through the Secret Life of Plants. The film made use of time-lapse photography (where plants are seen growing in a few seconds, creepers reach out to other plants and tug on them, mushrooms and flowers open). (wiki)