A decade-long campaign to raise awareness about the damage of invasive species has primed Metro to battle new invaders arriving thanks to climate change. Find out more.
At the south end of Burnaby Lake, its dense patches of tall, hollow canes nestled among cottonwood and alder trees crowd out gentler native plants such as ferns and salmonberries, because it “just takes over and the other native plants can’t grow,” Hendel said.
It can be eradicated, but takes diligence and vigilance — about three years worth of twice-annual treatments, targeted application of glyphosate herbicide and up to five years of monitoring, Hendel said. Her firm is working on about 4,500 to 5,000 knotweed in varying stages of that process across Metro Vancouver.
Metro Vancouver had fallen behind other regions in B.C., such as Vancouver Island, the Gulf Islands and Interior range lands, where ranchers have been acutely aware of the damage noxious invasive weeds can do to their forage crops, Murray said.Article content“Whenever it is that a region kind of starts fully paying attention to invasive species, things really change on the ground,” Murray said. “The challenge now is making sure people have the right information so that they know what to do.
The province and invasive-species councils use those reports to fill in the provincial map of known invasive species.In terms of scale, Metro Vancouver staff removed four tonnes worth of invasive plants from just the regional district’s parks in 2022. With all that added awareness, B.C. “is making really good progress,” said Becky Brown, an invasive plant specialist and one of the coordinators of B.C.’s early detection and rapid response program.
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