Rhs Chelsea Flower Show

Presented at the Chelsea Flower Show, the seedling will be planted in Dame Judi's garden at home after it was given a special name relating to its roots

Growing conditions have affected the plants in a National Trust exhibit at the flower show, and the charity says its gardens face a changing climate.

The garden is the first in the history of the show to be designed by children, for children – but grown-ups must make a special pledge to gain access.