Tom Hart Dyke goes on the hunt for endangered plants
Plant hunter Tom Hart Dyke goes to extreme lengths to find rare species around the world.
He was once kidnapped in Colombia and held hostage for nine months while trying to find a rare orchid.
Back in the UK, he was taken to a secret location in the Chiltern Hills to view the Red Helleborine.
The Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust is working with Kew Gardens to try to find ways to spread the plant.
BBC Inside Out South is on Monday, 5 November at 19:30 GMT and nationwide on the iPlayer thereafter.