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Potential Distribution of Stemless thistle (Onopordum acaulon) in Victoria (Nox)

This map of the potential distribution of Stemless thistle was produced from CLIMATE modelling, overlayed with:

Overlays used

Land uses:
Pasture irrigated and dryland
Broadacre cropping

Broad vegetation types:
Grassland; plains grassy woodland; coastal grassy woodland; herb-rich woodland; riverine grassy woodland; rainshadow woodland; mallee; mallee-heath; mallee woodland; heathy woodland; Wimmera-mallee woodland; inland slopes and sedge-rich woodland.

Colours indicate possibility of
Onopordum acaulon infesting these areas.
Red = Very High
Orange = High
Light Green = Medium
Dark Green = Likely
In the non-coloured areas the plant is unlikely to establish as the climate, soil or landuse is not presently suitable.

Further information on mapping potential distribution of weeds
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