SimplePlant

Asteraceae

Tall groundsel

Senecio hydrophiloides Rydb.

Family
Asteraceae
Genus
Senecio

Pet and kid safety: not checked yet. Check pet-safe plants

Tall groundsel: Senecio hydrophiloides—Sweet marsh ragwort. The species is included in the CNPS Inventory of Rare and Endangered Plants on list 4.2 (limited distribution). It i
Photo: John Rusk from Berkeley, CA, United States of America, CC BY 2.0, from Wikimedia Commons

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Common names

By language (1)
English
Tall groundsel

Synonyms

  • Senecio foetidus Howell
  • Senecio foetidus var. foetidus
  • Senecio foetidus var. hydrophiloides (Rydb.) T.M.Barkley ex Cronquist
  • Senecio oreganus Howell
  • Senecio pereziifolius Rydb.

Flowers

Flower colour
yellow (USDA PLANTS Database)

Characteristics

Growth habit
Forb/herb
Lifespan
Biennial, Perennial
In the US and Canada
Canada: native, Lower 48 states: native

Toxicity: Slight, as listed by the USDA PLANTS Database (2025-05-29). USDA rates how toxic a plant is to people or livestock; it is not a pet-safety rating, so ask a vet or poison line if a pet or child ate it.

Photos

More in Senecio

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.