Bulbs of this Pink Wood Sorrell or Oxalis Crassipes. These are delicate soft ground cover type plants that will spread very quickly. They are hardy from zones 6a – 9b. These plants do not like hot summers and tend to stop blossoming when it gets over 80 degrees. The leaved are the shamrock shape in a lime green and only grow about 6 inches tall. This perennial is happy in the sun to partial shade and produces masses of these pretty pink blossoms throughout the summer.