Britain's Prime Minister, Theresa May, and her husband Philip visit the RHS Chelsea Flower Show in London, Britain May 21, 2018.
A woman makes adjustments to a floral display based on thrones and chairs at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Roses are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A worker waters a display as preparations take place for the RHS Chelsea Flower Show in London, Britain May 20, 2018.
Detail of figures and flowers are seen on The Windrush Garden, created by Birmingham City Council at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A woman displays her floral decorated boots at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A floral display is seen on a Citroen H-Van at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Flytraps are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
Britain's Queen Elizabeth tours the Chelsea flower show with Sue Biggs (L) and Nicholas Bacon of the RHS in London, Britain May 21, 2018. Richard Pohle/Pool via REUTERS
Detail of jewellery and floral display is seen on a woman promoting a stand at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Auricula are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Auricula are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
Detail of a peacock themed display is seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Allium are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
Visitors view floral displays at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A worker adjusts a peacock themed display as she prepares for the RHS Chelsea Flower Show in London, Britain May 20, 2018.
A visitor carries a flower stem in a bag at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Fuchsia are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A display of Chrysanthemum are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018. REUTERS/Toby Melville
A display of Cacti are seen at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A man photographs a gladioli display at the RHS Chelsea Flower Show in London, Britain, May 21, 2018.
A worker adds flowers to a display as she prepares for the RHS Chelsea Flower Show in London, Britain May 20, 2018.
In Images: Chelsea Flower Show