A scientific breakthrough in Canning could reshape the fight against one of Western Australia’s most destructive tree pests.
In an Australian-first trial, the City of Canning has reported early success using systemic chemical injections to combat the invasive Polyphagous Shot Hole Borer (PSHB).
The pest, which threatens thousands of trees across Perth’s urban canopy, has met its match in a 131-tree trial within the Canning River Regional Park.
“The results are incredibly encouraging,” said Mayor Patrick Hall. “This could be a game-changer in protecting our urban forests.”
The trial, run in partnership with BioHerbicides Australia, ArbWest, and leading universities, shows the chemicals are effectively stopping beetle development and fungal spread, offering real hope in managing PSHB outbreaks.
The PSHB beetle, first detected in WA in 2021, bores into trees and spreads a fungus that blocks water and nutrients, eventually killing its host.
With more than 130 tree species susceptible to attack, its spread has triggered alarm among ecologists and local councils alike.
The City of Canning isn’t tackling the crisis alone.
It’s working closely with neighbouring councils including the City of Perth, City of Vincent, Town of Victoria Park, and the City of Gosnells, sharing findings, strategies, and resources. Many of these local governments are eager to participate in future chemical trials, but further progress hinges on coordinated state and federal funding.
“We’re on the right path, but without government support, we can’t go further,” said BHA’s John Szymanski.
