Rhaponticum repens

Family Asteraceae

Species Profile

Species classification Invasive [NSW's Noxious Weeds]
Common namesBlue Weed, Creeping Knapweed, Hardhead Thistle, Hardheads
SynonymsAcroptilon repens (L.) DC.; Centaurea picris Pall.; Centaurea picris Willd.; Centaurea repens L.
Growth formHerb
Seed dispersal morphologyWing/Achene/Pappus
Maximum height (m)1
Capable of vegetative reproductionYes
Native rangeNorthern 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 introduction1900

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

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Current suitable habitat

2035 suitable habitat
(RCP 8.5)

2065 suitable habitat
(RCP 8.5)

Recorded occurrences

Recorded occurrences


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