WAGGA drivers planning to hit the open road have been warned about a potentially pesky hitchhiker.
The council's environmental management team leader Tony Phelps said there are a variety of invasive weeds found in the municipality that can be transported to new areas.
Mr Phelps urged road users to avoid stopping in areas marked by red guide posts.
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He said the red posts, which are of similar appearance to the more common white guide posts, are an important tool to notify road users, farmers and contractors that high risk weeds are present in roadside vegetation.
"All it takes is for the seeds to attach to clothing, to the vehicle wheels, machinery parts or to the fur of an animal and they can be easily spread," he said.
"There are a variety of weeds we see across the Wagga Wagga City Council area and if these weeds are allowed to become established in new areas they can take many years to remove them."