Oxalis triangularis

Oxalis triangularis, commonly known as False Shamrock or Purple Shamrock, is a striking houseplant with deep purple, triangular leaves that open and close in response to light. This natural movement, known as nyctinasty, gives the plant a dynamic, ever-changing presence in the home.

Native to South America, Oxalis triangularis grows from small underground bulbs, allowing it to store energy and enter periods of dormancy. If conditions aren’t ideal – such as low light, cooler temperatures, or inconsistent watering – the plant may die back completely. This is normal. With a short rest period in a cool, dry place, new growth will re-emerge once watering resumes.

This makes it an easy and forgiving indoor plant, perfect for brightening shelves, desks or windowsills with its rich colour and delicate, butterfly-like foliage. Pale pink flowers may also appear in the right conditions.

Why you’ll love it

• Unique purple triangular leaves that move with the light
• Also known as False Shamrock or Purple Shamrock
• Compact and perfect for smaller spaces
• Can regrow after dormancy, making it resilient and long-lasting

Plant care

• Light: Medium to bright indirect light
• Water: Water thoroughly, then allow the top 2–3cm of soil to dry out before watering again
• Feeding: Feed every 4–6 weeks during the growing season
• Dormancy: May die back temporarily – reduce watering and allow to rest before regrowth

Nursery Pot Size: 12cm
Height: Approx. 20cm
Fits Decorative Pot Size: 14cm