Illustrator Yukai Du created this lovely animation of Richard Karban's TED talk on plant communication.
From Yukai Du's site:
Can plants talk to each other? It certainly doesn't seem that way: They don't have complex sensory or nervous systems, like animals do, and they look pretty passive. But odd as it sounds, plants can communicate with each other — especially when they're under attack. Richard Karban explains how.
Watch Karban's full Lesson here.