The peak bloom date is "defined as the period when 70% of the Yoshino Cherry blossoms are open," according to the National Park Service.

Peak bloom is declared by the agency when 70 percent of the blossoms around the Tidal Basin — the reservoir on the National Mall — have opened.

Spring is in the air — and the cherry blossom trees near Washington’s National Mall are expected to reach peak bloom in a matter of weeks. Peak bloom for the cherry blossoms will fall