Index / Search / Centaurea diffusa
§1 Plant — species · Asteraceae
Centaurea diffusa Lam.
vernacular diffuse knapweed
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Annual, Perennial
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Centaurea
§2a
Native status, by region
- CAN Canada Introduced
- L48 Lower 48 States Introduced
§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Montana distribution
Recorded in 39 of 56 Montana counties.
Introduced · 39 counties
- Beaverhead 30001
- Big Horn 30003
- Blaine 30005
- Broadwater 30007
- Cascade 30013
- Deer Lodge 30023
- Fallon 30025
- Fergus 30027
- Flathead 30029
- Gallatin 30031
- Glacier 30035
- Golden Valley 30037
- Granite 30039
- Hill 30041
- Jefferson 30043
- Judith Basin 30045
- Lake 30047
- Lewis and Clark 30049
- Liberty 30051
- Lincoln 30053
- Madison 30057
- McCone 30055
- Meagher 30059
- Mineral 30061
- Missoula 30063
- Musselshell 30065
- Petroleum 30069
- Phillips 30071
- Powder River 30075
- Ravalli 30081
- Sanders 30089
- Silver Bow 30093
- Stillwater 30095
- Sweet Grass 30097
- Teton 30099
- Treasure 30103
- Valley 30105
- Wibaux 30109
- Yellowstone 30111
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/CEDI3 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3128962 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z