Today we're taking a trip back in time with Dr Chris Thorogood, Head of Science at Oxford Botanic Garden. Enter long-forgotten worlds of the weird and wonderful plants which flourished before, during and after the age of dinosaurs, and discover their descendants that still flourish today. Ferns are among these 'living fossils', and RHS Gardening Advisor James Lawrence shares some favourite varieties to grow in the garden* in discussion with colleagues Nikki Barker and Julie Henderson.

Plus, an alternative look at ancient plants with Sarah Gerrard-Jones, aka The Plant Rescuer. She's built a huge online following charting her journey into rescuing abandoned plants and championing houseplant heirlooms passed down through generations.

Useful links:  ►RHS info on ferns  ►RHS info on houseplants ►When Plants Took Over the Planet: The Amazing Story of Plant Evolution by Chris Thorogood ►The Plant Rescuer – The Book Your Houseplants Want You To Read by Sarah Gerrard-Jones

Contributors: Chris Thorogood, Sarah Gerrard-Jones