Index / Search / Clarkia gracilis
§1 Plant
Clarkia gracilis (Piper) A. Nelson & J.F. Macbr.
vernacular slender clarkia — species · Onagraceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Annual
- Group
- Dicot
- Family
- Onagraceae Juss.
- Genus
- Clarkia
§2a
Native status, by region
- L48 Lower 48 States Native
§2b
County-level range
· 42 counties across 3 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- Medium
- Moisture use
- Medium
- Fire
- None
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- 52 °F minimum
- Frost-free days
- 100 min.
- Precipitation
- 12–24 in/yr
- pH range
- 6.4–8.5
- Root depth
- 8 in min.
- Fertility need
- Medium
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Rapid
- Mature height
- 2.5 ft
- Foliage texture
- Medium
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Purple
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Spring
- Seed abundance
- High
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Moderate
- Stratify
- No
- Seeds / lb
- 2,000,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 42 counties across 3 states/territories.
California view state ↗ 26 N ▾
- Alameda 06001
- Butte 06007
- Colusa 06011
- Contra Costa 06013
- Del Norte 06015
- El Dorado 06017
- Glenn 06021
- Humboldt 06023
- Lake 06033
- Lassen 06035
- Marin 06041
- Mendocino 06045
- Modoc 06049
- Napa 06055
- Nevada 06057
- Plumas 06063
- Santa Clara 06085
- Shasta 06089
- Siskiyou 06093
- Solano 06095
- Sonoma 06097
- Sutter 06101
- Tehama 06103
- Trinity 06105
- Yolo 06113
- Yuba 06115
Oregon view state ↗ 10 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/CLGR ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/5420943 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z