"Botanicus Interacticus is a technology for designing highly expressive interactive plants, both living and artificial. Driven by the rapid fusion of computing and living spaces, we take interaction from computing devices and places it in the physical world using livings plants as an interactive medium."
http://www.disneyresearch.com/research/projects/hci_botanicus_drp.htm
Botanicus-interacticus
How they did it...
