A women wearing a dress of fresh flowers designed by Zita Elze poses for photographers in the M & A Centenary Garden during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) FOR BEST QUALITY IMAGE: ALSO SEE GF2E99P1GGC02. 

British artist Marc Quinn poses for a photograph with his sculpture of an orchid in the Royal Horticultural Society (RHS) garden during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A woman with flowers in her blue dyed hair looks at chrysanthemums at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY) 

A woman walks through floral artist Rebecca Louise Law's stand at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY TPX IMAGES OF THE DAY) 

An Allium 'Pinball Wizard' plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A visitor photographs a floral display at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY) 

A 'Hyacinthus Orientalis' plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

Carris (Harmanna) roses are displayed on a wall on the Harkness Roses stand at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY) 

A Papaver commutatum 'Ladybird' plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY) 

A visitor looks at a display of flowers during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A lily hybrid 'Sweet Desire' plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A woman wears a hat made from flowers during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

Water spouts from a creation by sculptor Mehrdad Tafreshi at the Quist stand at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY) 

A women looks at a display of flowers during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

Visitors look at a display of flowers during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

Pinball Wizard Allium are pictured at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY) 

Britain's Prince Harry, speaks with garden designer Roger Platts in the M&G Centenary garden during a private unannounced visit to the Chelsea Flower Show in London May 17, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: ROYALS ENTERTAINMENT ENVIRONMENT) 

An exhibitor deadheads a Van Gogh lavender flower during preparation for the Chelsea Flower Show in London May 17, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: ENVIRONMENT) 

Raymond Evison of the Guernsey clematis nursery inserts a name plate into a display during preparation for the Chelsea Flower Show in London May 17, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: ENVIRONMENT) 

A garden gnome is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A Dahlia Honka plant is seen during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY) 

A visitor smells a Sir Paul Smith climbing rose at the Chelsea Flower Show in London May 21, 2013. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY) 

A straw hat is seen in a rose garden during media day at the Chelsea Flower Show in London May 20, 2013. The annual show opens to the public on Tuesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ENVIRONMENT SOCIETY)