I thought we had a ring of clover around our outside shower. I sometimes squat and look for the four-leafed wonder among the hundreds of three-leafed clovers growing there. Turns out these clover impersonators are not clovers. They are Yellow Woodsorrels. The leaves open at dawn and close at dusk. This ground-hugging, native plant has small, buttery-yellow flowers that can bloom any time throughout the year.