Wildflower (forb) · Asteraceae
Largeflower hawksbeard
Crepis occidentalis · includes its varieties and subspecies
Largeflower hawksbeard is recorded as native to 12 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 192 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Largeflower hawksbeard at a glance
- Native in
- 192 counties, across 12 states and territories
- Estimated cold hardiness
- Zone 5a PLANTS minimum temperature −23°F
- Mature height
- 11 in PLANTS mature height
- Light and water
- Full sun (shade-intolerant) Low water use
Estimated cold hardiness: zone 5a. PLANTS gives a minimum temperature of −23°F; zone 5a winters bottom out at −20°F, the coldest half-zone that stays within that limit.
Largeflower hawksbeard is recorded as native to 12 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 192 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 192 where it is listed.
Native counties by state
- Arizona 3 counties
- California 31 counties
- Colorado 17 counties
- Idaho 21 counties
- Montana 27 counties
- Nevada 12 counties
- New Mexico 4 counties
- Oregon 19 counties
- South Dakota 3 counties
- Utah 23 counties
- Washington 15 counties
- Wyoming 17 counties
Growing traits
Values from the PLANTS characteristics record. “Not recorded” means PLANTS has no value; nothing here is estimated except the zone.
Growth
- Growth habit
- Forb/herb
- Duration
- Annual, Perennial
- Mature height
- 11 in
- Growth rate
- Moderate
- Growth form
- Single Crown
- Shape
- Prostrate
- Lifespan
- Moderate
- Active growth period
- Spring and Summer
Light and water
- Shade tolerance
- Intolerant (full sun (shade-intolerant))
- Moisture use
- Low water use
- Drought tolerance
- Medium
- Tolerance of waterlogged soil
- None
- Precipitation range
- 12 to 20 in per year
Soil
- Soil textures
- Coarse, medium and fine
- pH range
- 5.7 to 7.5
- Lime (CaCO₃) tolerance
- Low
- Salinity tolerance
- Low
- Fertility requirement
- Low
- Minimum root depth
- 8 in
Climate
- Minimum temperature
- −23°F
- Estimated cold hardiness
- Zone 5a and warmer
- Minimum frost-free days
- 110
- Fire tolerance
- High
Flowers, leaves and fruit
- Flower color
- Yellow
- Showy flowers
- Yes
- Bloom period
- Late Spring
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- Brown
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- No Known Source
- Family
- Asteraceae
- PLANTS symbol
- CROC
Source & data date
- Source
- USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
- Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
- USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
- Citation
- USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
- Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
- Data date
- Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
- Scope
- Crepis occidentalis (PLANTS symbol CROC), including 1 variety or subspecies folded into the species.
- Method
- A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources