Purple Marshlocks

(Comarum palustre)

Purple Marshlocks (Comarum palustre)

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Estimated Native Range
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Summary

Comarum palustre, commonly known as Purple Marshlocks, is a deciduous shrub native to peat bogs, marshes, and wet meadows in Northern North America and across Eurasia. It typically grows to about 12–18 inches (30–46 cm) in both height and width, forming a low, spreading mound. Purple Marshlocks is characterized by its pinnate leaves and small, star-shaped flowers that range in color from deep red to purple, each about one inch in diameter, blooming in the summer months. The flowers are modest in size but can be quite showy en masse due to their distinctive coloration.

This shrub is valued for its ability to thrive in wet conditions and is often used in water gardens, bog gardens, and for naturalizing in damp areas. It is hardy to USDA Zone 3, enduring temperatures as low as −40 °F (−40 °C). Purple Marshlocks requires consistently moist to wet soil conditions and can tolerate both peat and sandy substrates. It performs best in part shade but can also tolerate full sun if sufficient moisture is provided. While it is not commonly afflicted by diseases, it can be sensitive to drought and should not be allowed to dry out.CC BY-SA 4.0

Plant Description

  • Plant Type: Shrub
  • Height: 1-1.5 feet
  • Width: 0.667-1 feet
  • Growth Rate: Moderate
  • Flower Color: Red
  • Flowering Season: Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: High
  • Drainage: Slow, Standing

Common Uses

Bee Garden, Low Maintenance, Water Garden

Natural Habitat

Peat bogs, marshes, and wet meadows

Other Names

Common Names: Marsh Cinquefoil , Swamp Cinquefoil , Kragefod , Sumpf-Fingerkraut , Sumpfblutauge , Sumpf-Blutauge , Kurjenjalka , Potentille Des Marais , Myrhatt , Wateraardbei

Scientific Names: Potentilla palustris , Comarum palustre , Fragaria palustris , Potentilla comarum , Potentilla palustris var. palustris , Potentilla palustris var. parvifolia , Potentilla palustris var. villosa , Potentilla rubra , Potentilla palustris f. glandulosa , Comarium palustre

GBIF Accepted Name: Comarum palustre L.