Members of the public wishing to purchase flowers, to place at a makeshift memorial to the Sydney cafe siege, find a florist completely sold out in Martin Place, December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis involving Iranian-born gunman Man Haron Monis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW SOCIETY POLITICS) 

A vendor lights a rose with a torch for customers to check ahead of the upcoming Qixi Festival at a flower market in Kunming, Yunnan province, August 1, 2014. Qixi, also known as the Double Seventh Festival and the Chinese version of Valentine's Day, falls on the seventh day of the seventh month in the Chinese lunar calendar. REUTERS/Wong Campion (CHINA - Tags: SOCIETY) 

A florist delivers flowers at the funeral service for Peaches Geldof at the St Mary Magdalene and St Lawrence church in Davington, southeast England April 21, 2014. Geldof was found dead at her home on April 7, 2014. REUTERS/Neil Hall (BRITAIN - Tags: OBITUARY RELIGION) 

Syriza party's candidate for the Athens municipal election Gabriel Sakellaridis (C) holds a carnation offered by a local florist as he speaks with citizens during his electoral campaign in Athens April 8, 2014. After six years of recession and austerity, the election is being fought as much on national issues like an unpopular EU/IMF bailout as on local issues. Picture taken April 8, 2014. To match GREECE-ELECTION/ATHENS REUTERS/Alkis Konstantinidis (GREECE - Tags: POLITICS ELECTIONS) 

A florist arranges flowers at Pike Place Market in Seattle, Washington April 9, 2014. Protected by mountains on three sides and cooled by blasts of fresh ocean air, Seattle, the capital of the Pacific Northwest, is a summer haven for book readers, coffee-drinkers and outdoor adventurers who don't want to stray too far from a good dinner. Picture taken April 9, 2014. To match story TRAVEL-SEATTLE/ REUTERS/Jason Redmond (UNITED STATES - Tags: TRAVEL BUSINESS) 

The owner of a flower shop looks on as he stands at the entrance of his shop in Athens March 30, 2014. REUTERS/Yorgos Karahalis (GREECE - Tags: SOCIETY) 

Marine Le Pen (L), France's National Front leader, shakes hand with a florist on a market as she campaigns as part of the local elections in Nice March 19, 2014. The French will go to the polls to cast votes in the two-round 2014 Municipal elections on March 23 and March 30 to elect city mayors and councillors for a six-year term. REUTERS/Eric Gaillard (FRANCE - Tags: POLITICS ELECTIONS) 

A florists van leaves the Gatcombe Park estate in Gloucestershire, southern England January 18, 2014. Zara Phillips, the daughter of Britain's Princess Anne, gave birth to a daughter on Friday, and is thought to be staying on the estate with her husband Mike Tindall, local media reported. REUTERS/Neil Hall (BRITAIN - Tags: ENTERTAINMENT SOCIETY ROYALS) 

Osmin Tejada from Lotus Designs florist delivers a holiday wreath on Black Friday in Boston, Massachusetts November 29, 2013. Black Friday, the day following the Thanksgiving Day holiday, has traditionally been the busiest shopping day in the United States. REUTERS/Brian Snyder (UNITED STATES - Tags: BUSINESS) 

Janet Murnaghan, the mother of Sarah, an 11-year-old girl who underwent a double lung transplant, receives flowers from a florist delivery man outside their home in Newtown Square, Pennsylvania August 27, 2013. Sarah underwent an operation earlier this summer to receive the transplants in a case that set off a national debate about child access to organ donations. She had earlier been diagnosed with cystic fibrosis. REUTERS/Tom Milahek (UNITED STATES - Tags: HEALTH) 

A florist prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

A florist prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

Nelson Zapata, florist prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

A florist prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

Patricia Zapata, a 41-year-old florist, prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

A florist prepares a flower arrangement in the town of Santa Elena, a day before the annual flower parade in Medellin August 10, 2013. REUTERS/John Vizcaino (COLOMBIA - Tags: SOCIETY) 

A florist (L) talks to a customer at the Malveira village market, on the outskirts of Lisbon May 30, 2013. Portugal's business confidence improved for the fifth consecutive month in May, when the country sold its first 10-year bond since its 2011 EU/IMF bailout, the National Statistics Institute (INE) said on Thursday. However, the INE said its consumer confidence indicator edged down to a negative reading of 55.0 this month from minus 54.2 in April and minus 52.6 a year earlier, cutting short a four-month rising trend. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: POLITICS BUSINESS) 

A woman visits the floating flower market in Amsterdam, April 26, 2013. The Royal celebrations in the Netherlands this week put the country and the capital Amsterdam on front pages and television screens around the world with an orange splash. There's plenty to see and do in 48 hours in this compact city, where the world-famous Rijksmuseum only recently reopened after an extensive renovation. Picture taken April 26, 2013. To match story TRAVEL-AMSTERDAM/ REUTERS/Cris Toala Olivares (NETHERLANDS - Tags: TRAVEL SOCIETY) 

Florists arrange flowers in the Chechen capital Grozny April 22, 2013. The naming of two Chechens, Dzhokhar and Tamerlan Tsarnaev, as suspects in the Boston Marathon bombings has put Chechnya - the former site of a bloody separatist insurgency - back on the world's front pages. Chechnya appears almost miraculously reborn. The streets have been rebuilt. Walls riddled with bullet holes are long gone. New high rise buildings soar into the sky. Spotless playgrounds are packed with children. A giant marble mosque glimmers in the night. Yet, scratch the surface and the miracle is less impressive than it seems. Behind closed doors, people speak of a warped and oppressive place, run by a Kremlin-imposed leader through fear. Picture taken April 22, 2013. REUTERS/Maxim Shemetov (RUSSIA - Tags: SOCIETY POLITICS)

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Florists arrange flowers on the balcony of the Royal Palace in Amsterdam April 29, 2013. The Netherlands is preparing for Queen's Day on April 30, which will also mark the abdication of Queen Beatrix and the investiture of her eldest son Willem-Alexander. REUTERS/Dylan Martinez (NETHERLANDS - Tags: ROYALS POLITICS TRAVEL) 

Florists arrange flowers on the balcony of the Royal Palace in Amsterdam April 29, 2013. The Netherlands is preparing for Queen's Day on April 30, which will also mark the abdication of Queen Beatrix and the investiture of her eldest son Willem-Alexander. REUTERS/Dylan Martinez (NETHERLANDS - Tags: ROYALS POLITICS TRAVEL) 

Florists arrange flowers outside the entrance of the Nieuwe Kerk church in Amsterdam April 29, 2013. The Netherlands is preparing for Queen's Day on April 30, which will also mark the abdication of Queen Beatrix and the investiture of her eldest son Willem-Alexander. REUTERS/Michael Kooren (NETHERLANDS - Tags: ROYALS POLITICS TRAVEL) 

Anne Hidalgo (L), Paris deputy mayor and Socialist candidate in the 2014 city mayoral elections, speaks with a florist as she visits a flower shop in Paris April 5, 2013. REUTERS/Charles Platiau (FRANCE - Tags: POLITICS SOCIETY) 

A florist carries a wreath featuring a portrait of the late Hong Kong canto-pop singer and movie idol Leslie Cheung to the Mandarin Oriental Hotel in Hong Kong March 31, 2013, on the eve of the 10th anniversary of Cheung's death. Exhibitions, concerts and tribute events are held in Hong Kong to mark the 10th anniversary of the death of Cheung, who leapt to his death from the hotel on April 1, 2003. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT ANNIVERSARY) 

A deputy of Ukrainian President Viktor Yanukovich's Party of the Regions congratulates female opposition deputies as they block the speaker's rostrum to protest against a court ruling to strip Serhiy Vlasenko, their colleague and the lawyer of jailed former Prime Minister Yulia Tymoshenko, of his parliament deputy mandate during a session of the Ukrainian parliament in Kiev March 7, 2013. Many Ukrainian men started their run on florists on Tuesday, a day before International Womens' Day, to buy a fresh bouquet of flowers for their loved ones. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS ANNIVERSARY) 

A person purchases roses at florist on Valentine's Day in Los Angeles, California February 14, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: SOCIETY) 

People stand in line at a florist on Valentine's Day in Los Angeles, California February 14, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: SOCIETY) 

A man holding a bouquet of flowers walks past a florist's sign on Valentine's day in Los Angeles, California February 14, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: SOCIETY) 

A florist sorts roses in a floral shop on Valentine's Day in Sanaa, February 14, 2013. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: SOCIETY) 

A florist sorts roses in a floral shop on Valentine's Day in Sanaa, February 14, 2013. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: SOCIETY) 

Elizabeth Repizo arranges flowers at Boston Wholesale Flowers in Boston, Massachusetts February 13, 2013, the day before Valentine's Day. REUTERS/Brian Snyder (UNITED STATES - Tags: SOCIETY) 

Roses are displayed in a flower shop in Vienna February 13, 2013. On occasion of the Saint Valentine's Day on February 14 Austrians will spend some 21 million euros, and for the flower business it will be the top-selling day of the year, according to the Austrian Economic Chamber of Trade. REUTERS/Herwig Prammer (AUSTRIA - Tags: SOCIETY) 

A florist sorts roses in a flower shop in Vienna February 13, 2013. On occasion of the Saint Valentine's Day on February 14 Austrians will spend some 21 million euros, and for the flower business it will be the top-selling day of the year, according to the Austrian Economic Chamber of Trade. REUTERS/Herwig Prammer (AUSTRIA - Tags: SOCIETY) 

Florists bind bouquets in a flower shop in Vienna February 13, 2013. On occasion of the Saint Valentine's Day on February 14 Austrians will spend some 21 million euros, and for the flower business it will be the top-selling day of the year, according to the Austrian Economic Chamber of Trade. REUTERS/Herwig Prammer (AUSTRIA - Tags: SOCIETY) 

Roses are displayed in a flower shop in Vienna February 13, 2013. On occasion of the Saint Valentine's Day on February 14 Austrians will spend some 21 million euros, and for the flower business it will be the top-selling day of the year, according to the Austrian Economic Chamber of Trade. REUTERS/Herwig Prammer (AUSTRIA - Tags: SOCIETY) 

Pink roses are pictured at a flower shop on the eve of St Valentine's Day in Frankfurt February 13, 2013. REUTERS/Lisi Niesner (GERMANY - Tags: SOCIETY) 

A florist greets the crowd during the annual flower parade in Medellin August 7, 2012. Dozens of flower growers, known as silleteros, walk through a parade carrying decorative garlands. REUTERS/Albeiro Lopera (COLOMBIA - Tags: SOCIETY) 

Florist Kelly Jordan prepares her shop, Charmaine's Florist, featuring a re-creation of a first class stamp made of flowers, for the Diamond Jubilee of Britain's Queen Elizabeth, in Southsea, southern England June 1, 2012 REUTERS/Luke MacGregor (BRITAIN - Tags: ANNIVERSARY SOCIETY ROYALS) 

Francois Hollande, Socialist Party candidate for the 2012 French presidential election, holds a rose bush he received from a florist as he visits a street market in Tulle, May 5, 2012. France goes to the polls on Sunday for the second round of their presidential election. REUTERS/Stephane Mahe (FRANCE - Tags: POLITICS ELECTIONS) 

Marisa McCoy, from the Wareham Garden Club, works on a floral arrangement related to Ellsworth Kelly's painting "Blue Green Yellow Orange Red" for Art In Bloom at the Museum of Fine Arts, in Boston, Massachusetts April 27, 2012. REUTERS/Brian Snyder (UNITED STATES - Tags: SOCIETY TPX IMAGES OF THE DAY) 

A florist holds one of three wreaths, official biodegradable tributes to be cast overboard during a ceremony marking the Titanic disaster's 100th anniversary early Sunday, onboard the Titanic Memorial Cruise in the western Atlantic Ocean April 14, 2012. The ship's captain has said that due to the protected zone around the wreck site, only the three official biodegradable wreaths may be cast into the sea. REUTERS/Chris Helgren (CANADA - Tags: ANNIVERSARY TRAVEL TRANSPORT SOCIETY) 

A florist holds one of three wreaths, official biodegradable tributes to be cast overboard during a ceremony marking the Titanic disaster's 100th anniversary early Sunday, onboard the Titanic Memorial Cruise in the western Atlantic Ocean April 14, 2012. The ship's captain has said that due to the protected zone around the wreck site, only the three official biodegradable wreaths may be cast into the sea. REUTERS/Chris Helgren (CANADA - Tags: ANNIVERSARY TRAVEL TRANSPORT SOCIETY) 

A florist holds one of three wreaths, official biodegradable tributes, to be cast overboard during a ceremony marking the Titanic disaster's 100th anniversary early Sunday, onboard the Titanic Memorial Cruise in the western Atlantic Ocean April 14, 2012. The ship's captain has said that due to the protected zone around the wreck site, only the three official biodegradable wreaths may be cast into the sea. REUTERS/Chris Helgren (CANADA - Tags: ANNIVERSARY TRAVEL TRANSPORT SOCIETY) 

Flowers are displayed in a shopping trolley in front of a florist shop in the centre of Athens March 13, 2012. Greece said it will receive a total of 172.7 billion euros for its funding needs through 2015, including funds left over from its first bailout agreed in 2010, its second bailout agreed this year and additional funds from the IMF. REUTERS/Cathal McNaughton (GREECE - Tags: POLITICS BUSINESS SOCIETY) 

Customers purchase flowers from a florist on the eve of International Women's Day in central Moscow March 7, 2012. Men all over the country will acknowledge the women they love on International Women's Day on March 8 by presenting them with souvenirs and flowers. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ANNIVERSARY SOCIETY BUSINESS) 

Employees work at a flower market in Tbilisi March 7, 2012. Men all over the country will acknowledge the women they love by presenting souvenirs and flowers, which are highly in-demand during this period, to them on International Women's Day on March 8. REUTERS/David Mdzinarishvili (GEORGIA - Tags: SOCIETY ANNIVERSARY BUSINESS EMPLOYMENT) 

A florist prepares a bouquet of flowers in a shop belonging to the Sovkhoz Oktyabrskiy greenhouse in Russia's Siberian city of Krasnoyarsk March 6, 2012. Millions of Russian men will acknowledge the women they love by presenting flowers and souvenirs to them on International Women's Day on March 8. REUTERS/Ilya Naymushin (RUSSIA - Tags: SOCIETY ANNIVERSARY) 

A florist prepares flowers in a bathroom at the Tugendhat villa during its presentation to the media in Brno February 29, 2012. Ludwig Mies van der Rohe's Villa Tugendhat in the Czech city of Brno has been restored to its original splendor ahead of a public re-opening on March 6 of the masterpiece of modern architecture, whose turbulent history mirrors that of 20th century Europe. REUTERS/Petr Josek (CZECH REPUBLIC - Tags: SOCIETY) 

A woman buys flowers at the Myitkyina market in the capital city of Kachin State, northern Myanmar February 23, 2012. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY AGRICULTURE) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE - Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (2ndL), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, reacts as he stands with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE - Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, reacts as he speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE - Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (L), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (R), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

Nicolas Sarkozy (L), France's President and UMP party candidate in the French 2012 presidential election, speaks with an apprentice florist at a trade school in Tourcoing during a campaign trip February 23, 2012. REUTERS/Pascal Rossignol (FRANCE)
- Tags: POLITICS ELECTIONS) 

A florist prepares a bouquet on Valentine's Day at a flower shop in Baghdad February 14, 2012. REUTERS/Saad Shalash (IRAQ - Tags: SOCIETY)