The National Cherry Blossom Festival is scheduled to take place at the same time of Cable Show '09. In 2008, the peak blossom time was forecasted to occur from March 27 to April 3. The National Park Service has not announced when the peak time will be for 2009, but it is sure to happen around the time of The Cable Show.
You can get your bloom watch on early by checking in on the Cherry Blossom Web Cam.