Plants cannot uproot themselves to go and find the optimal environment for their survival. The circadian clock is a crucial survival strategy enabling plants to stay alive while they respond appropriately to a changing environment. Each cell has a clock gene, and these genes are thought to be synchronized somehow. How is the circadian clock involved in the physiological phenomena of plants? And given that plants do not have a central organ equivalent to the mammalian brain, how do they synchronize their multiple clocks?