The chemical that tells plants when it’s time to sleep
Ethylene, the hormone responsible for fruit ripening, also helps regulate plants' circadian rhythms, University of Melbourne research has found.
How sunflowers track the sun
An internal clock drives the daily dance of these plants, even though their movement was once put down to a mythological Greek love story.
A weed by any other name
Researchers explain what makes a plant a weed in one circumstance and acceptable in another, and how introduced species are part of the solution.