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| Plumeless thistle (Carduus acanthoides) |
| Family: Asteraceae |
| Description: |
| Plumeless thistle is a spiny, biennial plant, very similar to nodding thistle. It begins as a flat rosette and has small pink or purple flowers on tall flowering stems. |
| Other names: |
| Nodding thistle, welted thistle, bastard nodding thistle, Tarata thistle. |
| Values at risk: |
Ecological values, through competition with, and the exclusion of, native plants along forest and riparian margins, and in low and disturbed forest. Agricultural production, particularly in planted forests and pasture areas. |
| Strategy rule: |
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In the areas shaded red in the map, you must destroy all plumeless thistle, nodding thistle and variegated thistle on your property. In the areas shaded green in the map, you must destroy any plumeless, nodding and variegated thistle on your property for 100 m inside your boundary. Throughout Taranaki it is illegal to knowingly distribute or sell these thistles such as in hay. |
| How to destroy: |
Mulch with mechanical cutters. Grub or dig out of small seedlings. Use herbicides.
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Nodding and plumeless thistles are virtually indistinguishable from one another.
