False Shamrock

(Oxalis triangularis)

False Shamrock (Oxalis triangularis)

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Estimated Native Range
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Summary

Oxalis triangularis, commonly known as False Shamrock, is a perennial herb native to several regions in South America, including Brazil, Argentina, and Paraguay. It is often found in forested areas and grasslands where it thrives in the dappled light of open woodlands. This species is characterized by its distinctive deep maroon, trifoliate leaves that resemble those of the genus Trifolium, which includes the true shamrocks, hence the name "false shamrock." The leaves exhibit nyctinastic movements, folding down in response to darkness, physical disturbance, or intense sunlight. The white or pale pink flowers are five-petalled and also close at night. Oxalis triangularis typically grows to a modest size, forming clumps that are both ornamental and compact.

False Shamrock is valued for its unique foliage color and the dynamic movement of its leaves, making it a popular choice for indoor plant enthusiasts. It is also used in outdoor plantings within its hardiness zones. The plant’s ability to adapt to indoor conditions with bright, indirect light and cool temperatures makes it an excellent houseplant. It is important to note that while it can tolerate full sun, it prefers light shade to prevent leaf scorch. False Shamrock requires well-drained, humus-rich soil and should be watered only when the topsoil is dry, with reduced watering in winter to prevent rot. It is propagated by division of corms and should be cut back periodically to maintain vigor. While generally easy to care for, it can be sensitive to high temperatures and may enter dormancy if exposed to prolonged heat.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 0.5-1 feet
  • Width: 1-2 feet
  • Growth Rate: Moderate
  • Flower Color: Pink, Purple, White
  • Flowering Season: Spring, Summer
  • Leaf Retention: Deciduous, Semi-Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: Low, Medium
  • Drainage: Slow, Medium

Common Uses

Bee Garden, Bird Garden, Border Plant, Butterfly Garden, Deer Resistant, Drought Tolerant, Edible*Disclaimer: Easyscape's listed plant edibility is for informational use. Always verify the safety and proper identification of any plant before consumption., Groundcover, Low Maintenance, Potted Plant, Rabbit Resistant, Rock Garden, Showy Flowers

Natural Habitat

Native to forested areas and grasslands in South America, particularly Brazil, Argentina, and Paraguay

Other Names

Common Names: Sorrel , Triangeloxalis , Azedinha

Scientific Names: Oxalis triangularis , Oxalis triangularis f. glabrifolia , Oxalis palustris var. major , Oxalis triangularis var. lepida , Oxalis regnellii

GBIF Accepted Name: Oxalis triangularis A.St.-Hil.