Just last year I learned that this spring reliable can also serve as a reminder/trigger: it's time to apply corn gluten to the lawn for summer weed control.
I like the idea of using natural signals to time particular garden tasks. It makes biological sense to me.... Truthfully, it also seems a little poetic. And when we're applying a substance that's a fertilizer to already established plants, rather than a poison to almost everything it touches (like so many petrochemical substances that get used by many gardeners), it seems truly life enhancing.
So, folks, let's get out there and get those spreaders spurting. Here's to the golden sunshine of spring!