I'll have to keep an eye on our Wood Sorrel as well, I hadn't paid it much attention.
Our local farmers recently completed their third cut of grass this year.
To clarify one point about CC though. There is obviously a group of amateur astronomers on this site who be able to bear me out.
If NOTHING else were to change our climate, whether from internal or external or causes, our seasons would still change, with Spring getting earlier then getting later due to the planet's precession...
Precession (astronomy) - Wikipedia, the free encyclopedia
Roy.