The world of water plants is largely hidden but they are some of the most beautiful, bizarre and important habitats on earth.

Seasonal worlds are dominated by relentless change. For plants to survive they must get their timing right.

Deserts are hostile to life. Temperatures soar and plummet and water is rare. Yet even here plants have found ingenious ways to survive.

We rely on plants for the air we breathe, the food we eat and more but what is the future for plants in the human world?