This workshop raise the profile of plant conservation and show how plant conservation is key to addressing some of the grand environmental, social, and cultural challenges of today and in future. The workshop will highlight four such ´grand challenges´: ecological restoration, food security, climate change, and conservation of biocultural diversity. An expert in each of these fields will explain how plant conservation action is essential in meeting each challenge and will provide examples of how such action is producing positive results in the framework of the Global Strategy for Plant Conservation (GSPC). While it is recognized that these themes are closely linked and cannot be addressed in isolation, the audience will nevertheless be challenged to decide which makes the best case for plant conservation. This will be achieved by dividing the audience into groups, each of which will debate the issues and propose a ´first choice´ grand challenge. A spokesperson for each group will briefly justify their choice. Finally, the audience as a whole will vote for the grand challenge they think makes the best case for plant conservation action. The workshop aims to involve all participants in debate and focus attention on the importance of plant conservation with respect to many of the key issues facing society. Given the fact that plant conservation is too often neglected in the conservation debate, this workshop will aim to help participants build strong arguments in support of plant conservation, explain why such actions should be supported, and why GSPC implementation is fundamental to ensuring a sustainable future for all.