Mostly I have a quite vague grasp of the seasonal timelines that govern when flowers appear but every year on the last day of January I know there will be at least a few cherry blossoms on the naked twigs of the little black-barked street trees that can be seen almost anyplace in San Francisco because it has been true on the last day of January annually for the past forty years and was surely true even before that when I wasn't here to observe the fact. The ones above grow in a vulnerable row on Church Street alongside Mission Dolores School and are often vandalized.