Swamp cinquefoil

Potentilla palustris
Rose family (Rosaceae)

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Comarum palustre (syn. Potentilla palustris), known by the common names purple marshlocks, swamp cinquefoil and marsh cinquefoil, is a common waterside shrub. It has a circumboreal distribution, occurring throughout North America, Europe, and Asia, particularly the northern regions. It is most commonly found on lake shores, marshy riversides and stream margins, often partly submerged with foliage floating. It is a parent of some FragariaComarum hybrids, ornamental plants produced by crossing with strawberries.


Its branches spread into leaves with three to seven narrow leaflets which are sharply jagged. The stem is a reddish-brown, low sprawling, vine-like structure. Flowers extend from the branch which vary from red to purple, and are about one inch in diameter, blooming in summer. The stems roots at the base then rises to about 30 cm (12 in).


Swamp cinquefoil prefers peat soils but can also grow in moist sandy areas. It flourishes in USDA Zone 3 (minimum −40 °F or −40 °C). It grows to about 12–18 in (30–46 cm) wide by 12–18 in (30–46 cm) high when cultivated properly.


External links

  • Jepson Manual Treatment
  • USDA, NRCS (n.d.). "Comarum palustre". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team.
  • "Comarum palustre". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
  • Washington Burke Museum
  • Comarum palustre in the CalPhotos photo database, University of California, Berkeley
  • Wildflower.org.uk description



WWW info

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Potentilla palustris [L.]