This is from Amy Casari's coloring book, "Book of Shadows." Might not be the peak of spring everywhere but it is in the N. Hemisphere. In the S. Hemisphere; Spring peaks 9/1, Summer 6/1, Winter 6/1.
This is a neat book, some of the pictures a bit simplistic, but good for technique practice. I used colored pencils, wax & oil, fineliners, gel pens, and gel crayons.