FILE - In this March 19, 2012 photo, Khandan Jahanshani of Tehran, Iran enjoys the blooming cherry blossom trees among some of the oldest centennial trees along the tidal basin in Washington. ... more 
FILE - In this March 19, 2012 photo, Khandan Jahanshani of Tehran, Iran enjoys the blooming cherry blossom trees among some of the oldest centennial trees along the tidal basin in Washington. Washington's famous cherry blossoms turn 100 years old this year, offering a chance to look at the history of the oldest trees still standing that were once planted by first lady Helen Taft and the Japanese emperor's wife. (AP Photo/Jacquelyn Martin, File) less 
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Associated Press | Photo By Jacquelyn Martin, File
Thu, Mar 22, 2012 3:24 AM EDT