Hey Vic,
It's bluet, that little blue flower. flaflwrgrl solved the mystery. I thought for sure it was some variant of chickweed but nothing I'd seen before. Tiny bluet.
It is a nice park except during soccer season and then it's filled with irate parents whose children are on the losing side of a soccer game. We have regional soccer tournaments here and various areas of the park are set up as soccer fields. Otherwise it's pretty quiet. The walkway is shaded, the trees were left along it, and it meanders along the little creek. That's the pretty part.
We're having a cold spell up here again. I won't be taking that walk again anytime soon