Here on the cusp of April, one might use any number of seasonal markers to imagine the progress of Middle Spring. Beginning with daffodils today in the Ohio Valley, a person could, for instance, say that the road to May was really the road south past fresh honeysuckle leaves, dandelion blossoms, and forsythia flowers, past the blossoming pear trees, redbuds, and crab apple trees of the Carolinas, then the open dogwoods of Georgia, and ending finally with azaleas in New Orleans.