10 Bulbs Red Oxalis Wood Sorrel Flower Oxalis Purple Shamrock Oxalis Triangularis Fast Ship Height: 4-6 inches. Blooms summer to fall. Prefers full sun. Hardy in zones 7-10, elsewhere grow as house plant The purple-leaf shamrock, Oxalis triangularis, is a low-growing foliage plant for the garden that also makes for an attractive indoor plant with rich, vibrant, purple leaves. People have gravitated to this beautiful foliage plant to add color indoors and outdoors for several decades. This Brazilian native came to the United States in the 1980s and its popularity continues to grow. Indoors, it can fill a pot with rich, purple leaves and add a dash of color to the often green indoor plant world. It is actually multiple small plants that grow as a group from bulbs. Bulbs Red Oxalis Wood Sorrel Oxalis Purple Shamrock Oxalis Triangularis Flowering Bulbs Ornamental Plant Indoor Plant Perennial