Purple Shamrock Plant is a rhizomatous herbaceous ornamental garden or houseplant in the wood sorrel family that is native to South America. The trifoliate leaves resemble a shamrock and can be green to variegated to deep maroon in color. The leaves close up at night or when disturbed. The white to pink 5-petaled flowers bloom in clusters in spring to summer on stems held above the plant and also close at night.
Use a loamy potting mix with good drainage and allow the surface to dry between waterings. Place in full sun to partial shade. The plant may go dormant for a while in fall or if it gets too hot or too dry. Cut back on watering and wait for new growth to appear.