Purple Shamrock
Oxalis triangularis
A rhizomatous perennial with stunning deep purple, triangular leaves that fold at night. Native to South America, it's cherished for dramatic foliage and delicate pink-white flowers.
Oxalidaceae (Wood Sorrel family)
Summer (June-September), sometimes sporadically year-round indoors
Symbolism & Meanings
Key Meanings
Perfect For
Color Meanings
Similar flowers: tricyrtiss and bauhinias also share similar meanings.
Cultural Significance
Often marketed as "shamrock" around St. Patrick's Day but is not the true Irish shamrock (Trifolium). The three-leafed structure symbolizes the Holy Trinity in Christian tradition. The plant's ability to "resurrect" from dormancy symbolizes renewal and resilience. Awarded the RHS Award of Garden Merit.Shop Our Floral Collection
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Physical Characteristics
Natural Habitat
Growing Guide
Sunlight
Bright indirect light indoors; partial shade to sun outdoors; tolerates various light conditions
Water
Moderate; water when top inch of soil dries; reduce during dormancy
Soil
Well-drained, Loamy, Rich potting mix, Slightly acidic to neutral
Expert Growing Tips
Plant rhizomes 1 inch deep in spring
Allow natural dormancy period (stop watering when leaves wilt)
Resume watering after 2-4 weeks to trigger new growth
Leaves fold at night and open in morning (photophilic)
Goes dormant if temperatures exceed 80°F (27°C)
Divide crowded clumps every few years
Can be grown year-round indoors
Uses & Benefits
Ornamental Uses
- Houseplant for dramatic foliage
- Ground cover in mild climates
- Container and mixed plantings
- Border edging
- Shade garden accent
- Indoor decorative specimen
Traditional Uses
- Leaves are edible in moderation (contain oxalic acid)
- Contains compounds that can interfere with digestion in large quantities
- Not recommended for those with kidney issues or gout
Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.
Further Reading
Frequently Asked Questions about the Purple Shamrock
Why does my purple shamrock close at night?
Purple Shamrock is photophilic—its leaves fold down at night and open in daylight. This natural movement, called nyctinasty, helps the plant conserve energy.
Is purple shamrock toxic to cats and dogs?
Yes, Purple Shamrock contains oxalic acid and is toxic to cats, dogs, and horses if ingested in large quantities. It can cause digestive upset and kidney issues.
Why is my purple shamrock dying?
Purple Shamrock naturally goes dormant when stressed by heat (above 80°F), drought, or seasonal changes. Stop watering, let foliage die back, then resume watering after 2-4 weeks for new growth.
Is purple shamrock the same as a real shamrock?
No, Purple Shamrock (Oxalis triangularis) is a false shamrock from South America. True Irish shamrock is usually Trifolium dubium, a type of clover.
Available Colors
Quick Facts
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