"It's a busy intersection at this time of year and anything that gives motorists an extra couple of seconds of visibility is a good idea," he said.
"It might mean we don't have to attend a serious crash at the intersection further down the track."
His roadside gardening made it to Reddit where he was called a "bloody legend".
"Prevention first. Nice," one user commented.
"As a local who uses this intersection, there have been multiple accidents (some fatal) and near misses. I like to think our QT cops are trying to make it a bit safer - be it visibility or radar guns. We need all the help we can get to make the roads safer. It's insanity around here. Check out the number of road deaths here for a population of only 24k," another Reddit user said.
Some more skeptical Reddit users suggested the officer was trimming the bush in order to increase his own visibility as he sits in the car to spot speeding vehicles.
"Plot twist, he was cutting it so he can get a better view of oncoming cars to ticket," someone wrote.