Purple Shamrock
Oxalis triangularis
Family: OxalidaceaeNative: South America (specifically Brazil)Identified: Mar 8, 2026
A bulbous perennial plant known for its striking trifoliate, triangular leaves that are deep purple in color and exhibit nyctinasty (closing at night). It produces small, delicate five-petaled white to light pink flowers.
Learn more about Purple Shamrock in the encyclopedia →Care instructions
Thrives in bright, indirect light but should be protected from direct midday sun. Water when the top inch of soil feels dry, ensuring proper drainage to prevent bulb rot. It prefers cool to average household temperatures and may enter a dormancy period where it loses its leaves and requires significantly less water until new growth appears.