Pest Photo

Hippolyte Coste

Horse thistle

Onopordum acaulon

Horse thistle (Onopordum acaulon) is an invasive plant. It is a native of Africa.

This thistle is a rapid spreader which can quickly take over in pasture or crops and seriously reduce production.

For more information about this plant pest, see the CAPS data sheet and the CABI data sheet.
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