Cardamine trifolia | Three-leaf Cardamine

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DESCRIPTION
Cardamine trifolia is a delightful perennial plant native to moist woodlands, stream banks, and other damp areas of North America, Europe, and Asia. Growing to about 6-12 inches in height and width, it features deeply lobed, shamrock-like leaves arranged in whorls of three, with vibrant green foliage that brightens shady corners. In late spring to early summer, it produces delicate clusters of small, four-petaled white flowers on slender stalks, attracting bees and other pollinators. Preferring partial to full shade and moist, well-drained soil rich in organic matter, Cardamine trifolia is ideal for woodland gardens, boggy areas, and along streams or ponds, where it can naturalize and form an attractive ground cover. This low-maintenance plant requires regular watering during dry spells and occasional division to control its spread. Additionally, its leaves have a pungent, bitter flavor similar to watercress, making them a unique addition to salads or as a garnish.

DESCRIPTION
Cardamine trifolia is a delightful perennial plant native to moist woodlands, stream banks, and other damp areas of North America, Europe, and Asia. Growing to about 6-12 inches in height and width, it features deeply lobed, shamrock-like leaves arranged in whorls of three, with vibrant green foliage that brightens shady corners. In late spring to early summer, it produces delicate clusters of small, four-petaled white flowers on slender stalks, attracting bees and other pollinators. Preferring partial to full shade and moist, well-drained soil rich in organic matter, Cardamine trifolia is ideal for woodland gardens, boggy areas, and along streams or ponds, where it can naturalize and form an attractive ground cover. This low-maintenance plant requires regular watering during dry spells and occasional division to control its spread. Additionally, its leaves have a pungent, bitter flavor similar to watercress, making them a unique addition to salads or as a garnish.

  • Family: Brassicaceae
    Height: 6 to 12 inches
    Width: Similar to height, forming a clump
    Foliage color: Vibrant green
    Flower color: White
    Bloom time: Late spring to early summer
    Light requirements: Partial to full shade
    Water requirements: Moist, well-drained soil
    Maintenance: Low; regular watering during dry spells, occasional division to control spread
    Growing zone: USDA zones 3 to 8
    Wildlife attractors: Bees and other pollinators

    This plant can be seen at the Bellevue Botanical Garden.

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  • Works Well In:
    ‍ ‍ ● Pollinator Gardens
    ‍ ‍ ● Rain Gardens
    ‍ ‍ ● Borders
    ‍ ‍ ● Woodland Gardens

    Companion Plants:
    ‍ ‍ Ferns Primroses
    Trilliums Virginia bluebells
    Marsh marigolds Japanese forest grasses

    Design Tip:
    Allow this woodland groundcover to spread beneath deciduous shrubs where it can knit together open pockets of soil. The continuous carpet creates a seamless transition between larger plants, giving shaded gardens a settled, natural appearance without feeling overly formal.