Rhaponticum repens
Family Asteraceae
Species Profile
| Species classification | Invasive [NSW's Noxious Weeds] |
| Common names | Blue Weed, Creeping Knapweed, Hardhead Thistle, Hardheads |
| Synonyms | Acroptilon repens (L.) DC.; Centaurea picris Pall.; Centaurea picris Willd.; Centaurea repens L. |
| Longevity | Perennial |
| Growth form | Herb |
| Seed dispersal morphology | Wing/Achene/Pappus |
| Maximum height (m) | 1 |
| Capable of vegetative reproduction | Yes |
| Native range | Northern Africa, Asia, Europe |
| Exotic range (Australia) | NSW, QLD, SA, VIC |
| Exotic range (other) | North America |
| Habitat types (exotic) | Agricultural land, Disturbed areas (including trails), Pastures, Roadsides, Wastelands |
| Soil type (exotic) | Clay, Loamy, Most soil types |
| Decade of introduction | 1900 |
National Climate Change Impact
Invasive Class 3
The area of suitable habitat and the habitat suitability of observations, for this species, are projected to decrease or remain the same under RCP 8.5 2065 compared to current climate suitability.
Maps of Habitat Suitability & Recorded Occurrences
Click thumbnail to enlarge and scroll through maps
Current suitable habitat
2035 suitable habitat
(RCP 8.5)
2065 suitable habitat
(RCP 8.5)
Recorded occurrences
(Australia)
Recorded occurrences
(global)
Images
Click thumbnail to enlarge image
Further Information
© 2014-2019 Macquarie University
