Australia's biosecurity defences regularly breached by pest invaders

Chris McLennan
Updated July 4 2022 - 11:02pm, first published June 5 2022 - 7:00am
WORLD'S WORST: Siam Weed has been called the world's worst weed, and is toxic to cattle. It is gaining a foothold across the north.
WORLD'S WORST: Siam Weed has been called the world's worst weed, and is toxic to cattle. It is gaining a foothold across the north.

Australia's flaky frontier has again been exposed as authorities across the north grapple with yet more invaders.

Chris McLennan

Chris McLennan

National Rural Property Writer

ACM national rural property writer based in Bacchus Marsh, Victoria. Career journalist. Multi award winner.

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