Australia's biosecurity defences regularly breached by pest invaders

Chris McLennan
By Chris McLennan
Updated July 4 2022 - 1:02pm, first published June 4 2022 - 9:00pm
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.

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Chris McLennan

Chris McLennan

National Rural Property Writer

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