Index / Search / Phlox diffusa
§1 Plant
Phlox diffusa Benth.
vernacular spreading phlox — species · Polemoniaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb, Subshrub
- Duration
- Perennial
- Group
- Dicot
- Family
- Polemoniaceae Juss.
- Genus
- Phlox
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 106 counties across 7 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- Low
- Moisture use
- Low
- Fire
- Medium
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -13 °F minimum
- Frost-free days
- 120 min.
- Precipitation
- 20–40 in/yr
- pH range
- 6.5–8.5
- Root depth
- 15 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Slow
- Lifespan
- Moderate
- Mature height
- 0.5 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Moderate
- Flower colour
- Purple
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Late Spring
- Seed abundance
- Medium
- Seed begins
- Summer
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- Yes
- Propagation
- seed, container, sprigs
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 106 counties across 7 states/territories.
California view state ↗ 28 N ▾
- Alpine 06003
- Amador 06005
- Butte 06007
- Colusa 06011
- Del Norte 06015
- El Dorado 06017
- Fresno 06019
- Glenn 06021
- Humboldt 06023
- Kern 06029
- Lake 06033
- Lassen 06035
- Madera 06039
- Mariposa 06043
- Mendocino 06045
- Modoc 06049
- Mono 06051
- Nevada 06057
- Placer 06061
- Plumas 06063
- Shasta 06089
- Sierra 06091
- Siskiyou 06093
- Tehama 06103
- Trinity 06105
- Tulare 06107
- Tuolumne 06109
- Ventura 06111
Idaho view state ↗ 15 N ▾
Montana view state ↗ 4 N ▾
Nevada view state ↗ 9 N ▾
Oregon view state ↗ 27 N ▾
- Baker 41001
- Benton 41003
- Clackamas 41005
- Clatsop 41007
- Crook 41013
- Curry 41015
- Deschutes 41017
- Douglas 41019
- Harney 41025
- Hood River 41027
- Jackson 41029
- Jefferson 41031
- Josephine 41033
- Klamath 41035
- Lake 41037
- Lane 41039
- Linn 41043
- Malheur 41045
- Marion 41047
- Multnomah 41051
- Sherman 41055
- Tillamook 41057
- Umatilla 41059
- Union 41061
- Wallowa 41063
- Wasco 41065
- Washington 41067
Washington view state ↗ 22 N ▾
- Chelan 53007
- Clallam 53009
- Cowlitz 53015
- Douglas 53017
- Garfield 53023
- Grays Harbor 53027
- Jefferson 53031
- King 53033
- Kittitas 53037
- Lewis 53041
- Mason 53045
- Okanogan 53047
- Pacific 53049
- Pend Oreille 53051
- Pierce 53053
- Skagit 53057
- Skamania 53059
- Snohomish 53061
- Spokane 53063
- Stevens 53065
- Whatcom 53073
- Yakima 53077
Wyoming view state ↗ 1 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/PHDI3 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2927749 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z