Oxalis
Oxalis triangularis
Also known as Purple Shamrock or False Shamrock — a Brazilian tuberous perennial with striking deep-purple triangular leaflets that fold up at night and reopen in the morning (nyctinasty). Produces delicate pale-pink flowers through much of the year. Has a natural dormancy period when foliage dies back — stop watering and store cool until new growth emerges in 2–8 weeks.
Quick Facts
Distribution
Indoor (native to Brazil)
Light
Bright indirect light to some direct sun
Bloom Time
Most of the year (pale pink flowers)
Soil
Standard well-draining potting mix
Water
When top 2–3 cm is dry; stop entirely during dormancy
Toxic to Pets— Oxalic acid — causes drooling, vomiting, potential kidney effects in cats, dogs & horses
Growing & Cultivation
Propagation
Tuber division — tip out the pot during dormancy and separate the small corms; each will grow a new plant when repotted
