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. ... Indoors, it can fill a pot with rich, purple leaves and add a dash of colour to the often green indoor plant world.
Oxalis Triangularis has three purple heart shaped leaves. The overall effect is that they end up looking like a trio of butterflies joined together by their noses.
Oxalis is not overly fussy with its light requirements. However for a good looking plant you're going to want an area which receives bright light, or even some sun for a few hours a day. Don't overdo the sunshine though, too much sun will damage the leaves.
Ideally soak the soil and then allow the top inch or so to dry out before watering again.