This year the Chelsea Flower Show celebrates its centennial year. Its status as "the greatest flower show on earth" is maintained in no small part by its long-standing association with the Queen.
The relationship dates back as far as May 1952, and since then the monarch has visited the annual show on all but 12 occasions. It's a passion she has passed on; this year, interest is at an all-time high thanks to the involvement of her grandson, Prince Harry.
In celebration of the horticultural show's 100th birthday, HELLO! Online takes a look back at its colourful history with the royal family.
CLICK ON PHOTO FOR FULL GALLERY
Watch: Prince William takes George to meet his sister
It's a little princess!