Oxalis triangularis (False Shamrock)

Sought after for its beauty, Oxalis triangularis (False Shamrock) is a bulbous plant forming a lush foliage clump of trifoliate leaves that close at night and open wide to the morning light. Each leaf has the shape of a little heart but is triangular like butterfly wings. Depending on the variety, the foliage may be rich purple or green, sometimes with a darker triangle of color in the center.

Sought after for its beauty, Oxalis triangularis (False Shamrock) is a bulbous plant forming a lush foliage clump of trifoliate leaves that close at night and open wide to the morning light. Each leaf has the shape of a little heart but is triangular like butterfly wings. Depending on the variety, the foliage may be rich purple or green, sometimes with a darker triangle of color in the center. In summer, umbels of delicate, five-petaled flowers, white or pale lavender-pink, appear atop slender stems, above the handsome clover-like foliage. This is a very easy foliage plant to cultivate and maintain. Incredibly long-lived, False Shamrock is a good choice for containers, borders, or indoors. Great as a ground cover in mild winter areas.

  • Grows up to 6-12 in. tall (15-30 cm) and 12-24 in wide (30-60 cm).
  • Easily grown in light (sandy), medium (loamy), well-drained soils in bright light or part shade. Water regularly during the active growing season, but allow the surface soil to dry out between waterings.
  • Well-suited to borders, containers, woodland gardens
  • Deer and rabbit resistant.
  • Propagate by seed or division
  • False Shamrock is also considered an invasive plant in some parts of the world.
  • Toxic to dogs, toxic to cats, toxic to horses.
  • Native to Brazil

Requirements

Hardiness 8
– 11

Heat Zones 1
– 9

Climate Zones 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1, H2
Plant Type Bulbs, Perennials
Plant Family Oxalis
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Height 6"
– 1'
(15cm
– 30cm)
Spread 1'
– 2'
(30cm
– 60cm)
Water Needs Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Tolerance Deer, Rabbit
Attracts Butterflies
Garden Uses Ground Covers, Patio and Containers