From Monday 10 November, the City of Casey will begin removing pine trees along a section of Princes Highway in Berwick, as part of efforts to manage the spread of Giant Pine Scale (GPS) - a pest that poses a threat to our local environment.
These works, taking place between the entrance to Wilson Botanic Park and Lyall Road for about three weeks, are part of a broader plan to manage the spread of GPS on land managed by Council.
GPS is a tiny insect that mostly feeds on pine trees, though it can also affect firs and spruces. It leaves a white, waxy coating on the bark, weakens trees, increases fire risk, and could harm Victoria's timber industry if not managed.
While GPS poses no risk to people or pets, it is difficult to control. There are no effective chemical treatment options available and it has no known predators in Australia; removing infested trees is currently the most effective way to stop GPS from spreading.
It's important to note that infested trees are known to weaken and decline pre-maturely and would eventually need to be removed. Removing them now helps stop the pest from spreading further.
Manager of Infrastructure and Open Space Nicole Young said Council is taking a careful, science-based approach and will only remove trees when absolutely necessary.
"We're focused on protecting local biodiversity and keeping Casey green, safe and liveable for generations to come," Nicole said.
"Council will replant new trees in the area once safe to do, which is expected to be mid-2026, to keep our streets and parks green and welcoming.
"We appreciate the community's understanding as we take action to protect Casey's urban forest for the future."
GPS has been identified in different areas of Casey, especially in Narre Warren, Harkaway, Berwick and Wilson Botanic Park. Council has allocated funding in this year's budget to begin removing infested trees in the southern most affected areas first.
The removal of GPS infected pine trees is recommended in Council's Giant Pine Scale Management Plan, that was developed by a GPS expert.
Removed trees will be mulched and safely quarantined for up to six months to prevent further spread of GPS. Once safe to use, the mulch will be used in parks.
Residents can play a role in stopping the spread. Check pine trees on your property for signs of GPS - look for white, waxy residue on the bark. If you spot anything suspicious, report it to Agriculture Victoria or call the Exotic Plant Pest Hotline on 1800 084 881. Please don't attempt to remove or move infested material yourself, as this could spread the pest further.
