"Some of the common traits are ... as well as the expense of controlling them. "Weed management is Australia's most expensive ...

It’s a common weed in both New Zealand and Australia, that invades farms, gardens and roadsides. Ngow doesn’t think wild ...

At least three-quarters of weeds established in the Australian environment have come from escaped garden plants, according to a 2004 report by biosecurity strategist John Virtue. Even among ...