Oxalis is also referred to as false shamrock. It requires sunny conditions with soil that drains well. The bulbs are small so they only need to be planted 1 to 1 ½ inch deep and 3 inches apart. It can be used as a bedding plant but I think it looks best when planted in containers where it can spill over the edges of the pot. After they finish blooming the foliage, which is often attractive in its own right, should remain in place to gather strength so the bulb can be stored and planted again next spring. They come in a variety of colors and require little care once they are planted.