Certain species of smaller, unattractive wood sorrels are the bane of my existence in the nursery as a prolific weed, but this species is an absolute delight. Shamrock leaves are bright green, and the flowers are such a wonderful shade of violet-pink with a center that transitions from white to green. A super easy plant to grow. It can spread by reseeding but if it reaches areas of the garden you didn't intend, it is very easy to uproot. *