The RHS Chelsea Flower Show, opens its doors to the public today - this is one of the gardening world's great horticultural moments - drawing around 157,000 visitors to the 23 acre grounds of the Royal Hospital. First held in 1913, Chelsea has spent over a century inspiring gardeners and growers to showcase the very best in horticulture, all competing for the coveted Chelsea Gold Medal.

This year, watch out for the Missing Collector Garden, built by the charity Plant Heritage, sponsored by Project Giving Back - this is their first ever Chelsea garden. Over the past 6 months, I have been exploring how this garden has come to life.

Designed by Sally-Anne Rees, Kate Campbell and William Murray, from the Planting Design Collective, the garden conjures a mysterious gardener who has just stepped away from his precious plant collection. It aims to shine a light on how many beloved garden plants remain unprotected by national collections.

After 18 months of planning, it's finally being revealed to public and judges alike.

Other episodes I have made about this garden which you might enjoy.

The Idea The Plant Grower. The Chair Farmer

Our Plant Stories is presented and produced by Sally Flatman

The music is Fade to Black by Howard Levy