London - It has been one of his life’s greatest passions.
And these before and after images of Prince Charles’s gardens at Highgrove show just what a labour of love they have been.
When he acquired the 18th-century countryside retreat and estate near Tetbury, Gloucestershire, in 1980, it had only a kitchen garden, an overgrown copse, some pastureland and a few hollow oaks.
Charles has spent the past 40 years transforming the estate - which has served as his private home with both Diana and the Duchess of Cornwall.
These archive photos were released by Clarence House to mark the 25th anniversary of the gardens opening to the public.