This week, maybe just for a week, the dogwoods are blooming. Spring comes in waves around here. First it’s the star magnolia, showers of white petals beginning to peep in early February, then the camellias. Then the tulip trees blossom in March, and the Japanese maples and the birches begin to leaf out. Now it’s April, and the street is awash with white and pink dogwoods. The roses are just about to burst open, as is the jasmine.