This plant was added to my garden when I got some of the bulbs from a neighbor's (Granny Schwarz) yard. It is usually one of the first things that blooms in the spring. Some people call them shamrocks, since the leaf is a shamrock shape, although it's official name is oxalis.
Several years ago, I went with my daughter's class to Ireland for their Senior trip. In Dublin, I noticed that practically every yard had a patch of this plant. I guess they really are shamrocks, and wouldn't you expect shamrocks to be in every yard in Ireland?
Granny Schwarz passed away suddenly several years ago. Her son allowed me to have some of the bulbs before he sold her house. God bless Granny Schwarz.