It is "bloom watch" time for the Yoshino cherry trees in D.C.Sadly, this year will only have half of the usual blooms because of a late frost this month (March 2017). So for Day 108 of the 365 Days of Art - I am featuring an image of a Larkin watercolor. Matted copies of this watercolor were given out at a conference in DC back in 2001.
The peak bloom date is defined as the day when 70% of the Yoshino Cherry (Prunus x yedoensis) blossoms are open. Peak bloom varies annually depending on weather conditions. The most likely time to reach peak bloom is between the last week of March and the first week of April. Extraordinary warm or cool temperatures have resulted in peak bloom as early as March 15 (1990) and as late as April 18 (1958).
The Yoshino trees typically bloom for a period of several days. The length of the blooming period depends on weather conditions. Cool, calm weather can extend the length of the bloom, and a rainy, windy day can bring an abrupt end to the ephemeral blossoms. A late frost can prevent the trees from blooming at all.
Forecasting peak bloom is almost impossible more than 10 days in advance.