Hart Dyke was inspired to create his garden at his family home, Lullingstone Castle in Kent, during nine months' captivity by guerrillas in the Panamanian jungle.
Against all advice, he had ventured into the Darien Gap with friend Paul Winder because he wanted to see the orchids. But the plants responsible for such a dramatic ending to his travels could not feature, until now.
He plans to spend £8,000 on an 11x3x4m lean-to glasshouse against the house and facing the lawn that will house orchid varieties from South-East Asia and Central and South America.
There is also a native orchid meadow planted with 128 common spotted, early marsh and southern marsh orchid tubers sourced from Jeff Hutchings of Laneside Hardy Orchids thanks to an £8,000 donation from Ed Huyton of the Isle of Man Gardening Club.
"People were saying you were captured because of the orchids. Where are they? It was embarrassing. This completes the picture," said Hart Dyke. "The native meadows are great because they are very suitable for conditions at Lullingstone and people are so interested in wild flower meadows now. The native orchids are what first interested me at a young age and the reason I was in the Darien Gap in the first place."