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Kosteletzkya pentacarpos
Also called Virginia Saltmarsh Mallow, Fen Rose, Saltmarsh Mallow, Seaside Mallow, Salt Marsh Mallow, Sweat Weed
A pink-flowered perennial herb of coastal marshes that tolerates salt. It is grown in gardens mainly for its tolerance of wet, saline conditions and its late-summer flowers.
Kosteletzkya pentacarpos, the seashore mallow, also known as the saltmarsh mallow, sweat weed, Virginia saltmarsh mallow, or hibiscus à cinq carpelles, is an herb found in marshes along the eastern seashore of North America, parts of coastal Southern Europe, southwestern Russia, and Western Asia.
This species is found throughout much of the Atlantic and Gulf coastlines of eastern North America, from New York south to Cuba, east to Bermuda, and west to Texas. It also has a fragmented distribution along the Mediterranean shoreline of southern Europe, including parts of coastal Spain & Italy, the Balearic Islands, and Corsica. Populations in northern Italy are thought to be introduced. One very small population is known from Georgia, on the coast of the Black Sea. It is also found along the western and southern shorelines of the Caspian Sea in Iran and Azerbaijan. This species is also found along the Volga and Don Rivers in southwestern Russia, but it is unknown whether these populations have natural origins.
In ancient Transcaucasia, K. pentacarpos and Hibiscus ponticus were abundant enough to be harvested in large numbers for their strong stem fibers, which were useful for making ropes and nets. In addition, studies indicate that K. pentacarpos is a potentially useful species for phytoremediation of saline soils polluted by metalloids, and can also facilitate the transition of coastal agricultural land to wetlands following sea level rise.
Text excerpted from the Wikipedia article Kosteletzkya pentacarpos by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
