Why does plant diversity matter?

There are hundreds of thousands of different plant species in the world, but sadly, we now know that one in five of these is threatened with extinction. But why should we care? Do we really need this much diversity? Well, the short answer to this question is yes, because plant diversity means resilience. Watch Kew's new video to find out more about why plant diversity matters, and how conservation work around the world is helping to safeguard plants at risk.