As the Washington Mounment is seen in the background, cherry trees start to bloom by Tidal Basin March 25, 2011 in Washington, DC. The annual 16-day National Cherry Blossom Festival will start tomorrow and run thru April 10. (Photo by Alex Wong/Getty Images)

A Japanese white-eye is seen on a branch of cherry blossoms at Kyoto Imperial Palace on March 26, 2010 in Kyoto, Japan. (Photo by Akihiro I/Getty Images)

People take pictures of the cherry blossoms at Tokyo's Ueno park on March 27, 2006 in Tokyo, Japan. The bloom of the cherry blossoms are 7 days earlier than the average year in Tokyo. (Photo by Koichi Kamoshida/Getty Images)

People walk underneath the blossoming cherry trees along the Tidal Basin during the National Cherry Blossom Festival March 29, 2009 in Washington, DC. With musical and cultural exhibits and performances, the festival will continue through April 12 and peak bloom expected between April 1-5. (Photo by Chip Somodevilla/Getty Images)

Cats rest on a branch of fully-bloomed cherry blossoms at Ueno Park on April 3, 2009 in Tokyo, Japan. Flower viewing or “Hanami” in Japanese is the national pastime of this time of the season in Japan. (Photo by Junko Kimura/Getty Images)

Maxewell Rees and his brothers Daniel Rees and Jackson Rees sit on a park bench partly submerged due to seasonal flooding next to the Tidal Basin as cherry blossoms begin their annual blooming season March 29, 2010 in Washington, DC. The cherry trees, given by Japan as a gift 98 years ago, are the center of the Cherry Blossom Festival which runs from March 27 through April 11. (Photo by Win McNamee/Getty Images)

Hirosaki Castle is seen surrounding by cherry blossom in full bloom during The Hirosaki Cherry Blossom Festival at Hirosaki Park on May 4, 2005 in Aomori Prefecture, Japan. Hirosaki Park is one of the major cherry blossom-viewing spots in Japan. There are approximately 2,600 trees in the park of all different types of cherry blossom. (Photo by Koichi Kamoshida/Getty Images)

South Korean girls wander beneath the floodlit cherry blossoms and play with sparklers in the evening, near the national assembly on April 17, 2005 in Seoul South Korea. Cherry blossoms are in full-bloom at mid-April in South Korea. (Photo by Chung Sung-Jun/Getty Images)

A woman looks at cherry blossoms at one of Tokyo's beauty spots on April 9, 2005 in Tokyo, Japan. Cherry blossom blooms at the end of March in Japan and Japanese people celebrate the blossom by having blossom viewing parties under cherry blossom trees. Today Japanese Prime Minister Junichiro Koizumi held a blossom viewing party in Tokyo's Shinjuku Gyoen park inviting around 8,700 people. He addressed the crowd and said, “In such a tranquil setting, today I just want to forget about bothersome politics and simply look at the flowers.” (Photo by Koichi Kamoshida/Getty Images)

A couple walks past a cherry blossom tree that has bloomed at the Brooklyn Botanic Garden on an unusually mild day January 5, 2007 in New York City. Cherry blossoms usually bloom at the beginning of spring. New York and the rest of the east coast have thus far experienced an abnormally mild winter. Partly blaming global warming, British climate scientists predict that 2007 could be the world's hottest year on record. The current warmest year on record is 1998, when the average global temperature was 1.2 degrees Fahrenheit higher than the long-term average of 57 F. (Photo by Spencer Platt/Getty Images)

A women walks under the cherry blossoms in full bloom at Chidorigafuchi, Chiyoda-ku on March 30, 2007 in Tokyo, Japan. Chidorigafuchi is one of the major cherry blossom-viewing spots in Tokyo. (Photo by Koichi Kamoshida/Getty Images)

People enjoy blooming cherry blossoms at Ueno park on March 29, 2008 in Tokyo, Japan. The blooms arrived seven days earlier than the average year in Tokyo, according to observers. (Photo by Koichi Kamoshida/Getty Images)

Cherry blossoms begin their annual blooming season near a Japanese sculpture and the Washington Monument March 31, 2010 in Washington, DC. The cherry trees, given by Japan to the United States as a gift 98 years ago, are the center of the Cherry Blossom Festival which runs from March 27 through April 11. (Photo by Win McNamee/Getty Images)