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Tephroseris palustris
Also called Marsh fleabane, Marsh fleawort
Tephroseris palustris is a daisy-family herb, often called marsh fleabane or swamp ragwort, that grows in wet meadows, marsh edges and ditches. It is usually an annual or biennial in cultivation and bears bright yellow flower clusters from May to early July.
Tephroseris palustris, also known by its common names swamp ragwort, northern swamp groundsel, marsh fleabane, marsh fleawort, clustered marsh ragwort and mastodon flower, a herbaceous species of the family Asteraceae. It can be seen most easily when its bright yellow umbel flowers appear from May to early July standing 3 to 4 feet (0.9 to 1.2 m) along marshes, stream banks and slough areas where it likes to grow.
Toxicity: Marsh ragwort is considered a vegetable and safe for human consumption; the young leaves and flowering stems of Senecio congestus can be eaten raw as salad, cooked as a potherb or made into a "sauerkraut",
Noxiousness: Tephroseris palustris appears on a list of North Dakota plants to be monitored, however, it tends to be more of a plant that the presence of which indicates severe disturbance such as over-foraging and hyper-salinity, as is the case of the habitats of arctic geese where the forage plants are disappearing. Two locations are mentioned by United States Fish and Wildlife Service (USFWS) having problems from the ever-expanding populations of arctic geese and one from the Arctic Institute of North America of the University of Calgary or from an unpublished report from the Canadian Wildlife Service made available by the USFWS:
Tephroseris palustris grows in areas that have freezing winters and in moist to wet soils, such as damp meadows, swamps, sandy pond edges and roadside ditches at altitudes of 0 to 3,300 feet (1,000 m)
Text excerpted from the Wikipedia article Tephroseris palustris 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.
