Just yesterday, I noticed roses blooming in the back garden while Spanish hyacinths were just hitting their prime along the side of the house. Redbuds trees (Cercis canadensis) have yet to drop their blossoms and the doublefile viburnums (Viburnum plicatum var. tomentosum) are ready to flower about a month early.
As a seasoned gardener, you learn to take all these changes (good and bad) into stride and realize that while you may be the stage manager, Mother Nature is the director of your garden show. And this year she's experimenting with some new seasonal mash-ups.