Weeds - Goulburn Broken Catchment Management Authority
Weeds - Goulburn Broken Catchment Management Authority
Weeds - Goulburn Broken Catchment Management Authority
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State Prohibited Weed<br />
Black Knapweed<br />
Centaurea nigra<br />
(Common Knapweed, Knapweed, Lesser Knapweed, Spanish Buttons)<br />
Description: An erect herb growing to 1m tall and spreading<br />
by creeping lateral roots.<br />
flowers: Reddish-purple flowers with forked outer petals.<br />
3-4 cm in diameter occurring singly at the end of branches<br />
from December to February.<br />
leaves: Grey/green to green, hairy and oblong shaped.<br />
Lower leaves can be toothed or smooth edged and up to<br />
25 cm long. Upper leaves are much smaller and clasp stem.<br />
stems: Erect up to 1 m. Ridged, hairy and rough to touch.<br />
Initially green but turning purple when mature.<br />
Note: Prohibits the germination and growth of desirable<br />
species and is not grazed by stock.<br />
similar Native species: Unlikely to be confused with native<br />
species.<br />
j f M A M j j A s O N D<br />
CONtROl OPtIONs VECtOR Of sPREAD<br />
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