Senecio hydrophiloides Rydb.

vernacular tall groundsel — species · Asteraceae

USDA: SEHY
GBIF: 3108743
Rank: species

tall groundsel (Senecio hydrophiloides) — Platephotograph · Matthias BuckCC BY-NC source · iNaturalist ↗

§2Habit & range

Growth habit: Forb/herb
Duration: Biennial, Perennial
Group: Dicot
Family: Asteraceae Bercht. & J. Presl
Genus: Senecio

§2a

Native status, by region

CAN Canada Native
L48 Lower 48 States Native

§2b

County-level range

· 2 counties across 1 state

Legend Native · 2 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought: None
Shade: Low
Moisture use: High
Fire: High
Salinity: None
Anaerobic: High
CaCO₃: Low
Hedging: None

§3b

Climate & soil

Cold tolerance: -28 °F minimum
Frost-free days: 120 min.
Precipitation: 12–24 in/yr
pH range: 5–7.5
Root depth: 10 in min.
Fertility need: Medium
Soil texture: coarse, medium, fine

§3c

Form & growth

Growth form: Single Crown
Growth rate: Moderate
Lifespan: Moderate
Mature height: 0.8 ft
Foliage texture: Coarse
Foliage colour: Green
Porosity (summer): Porous
Porosity (winter): Porous
Flower colour: Yellow
Fruit colour: Brown
Fire resistant: No
N fixation: None
Toxicity: Slight

§3d

Reproduction

Bloom period: Mid Spring
Seed abundance: Medium
Seed begins: Summer
Seed ends: Summer
Spread rate: Moderate
Stratify: No
Seeds / lb: 300,000
Propagation: seed

§3e

Use & availability

Commercial availability: No Known Source
Nursery stock: No
Browse palatability: Low
Palatable, human: Yes
Protein potential: Low
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 2 counties across 1 state.

Montana view state ↗ 2 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/SEHY ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/3108743 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-25

fetched 2026-05-25T18:27:19Z