Invasive species organization gets the word out about the ‘five worst weeds’ 

Sea to Sky Invasive Species Council campaign aims to help Whistlerites identify problem weeds

click to enlarge SUBMITTED - Yellow Flag Iris is one of the problem weeds the SSISC identify in their campaign.
  • Submitted
  • Yellow Flag Iris is one of the problem weeds the SSISC identify in their campaign.

Many Whistlerites recognize that invasive species are a threat to the community’s biodiversity.

They can rapidly reproduce and displace native vegetation through competition for water, nutrients and space. That said, it can be difficult to keep track of which ones to look out for.

That’s where a new campaign from the Sea to Sky Invasive Species Council (SSISC) comes in.

Whistler’s Five Worst Weeds Campaign uses a series of posters and fact sheets to educate the public on five “high-stakes” weeds.

"They're the worst offenders because they have the biggest potential impact," said Clare Greenberg, executive director of the SSISC.

Greenberg said that all of the species in the campaign can be found in Whistler—but only in limited, controllable amounts. “To give you an example, the Purple Loosestrife has only been found on two sites in Whistler, and one of those has (already) been controlled," she said.

Greenberg said that the aim of the campaign is to raise the profile of specific species, so the public is educated about them.

"The aim of the program is to raise awareness about species that people don't see everyday and maybe aren't on their radar,” she said, adding that the posters “give people a visual queue” for what to look out for.

So what should Whistlerites be on the look out for?

In no particular order, the five worst offenders are Scotch Broom, Yellow Flag Iris, Himalayan Blackberry, Japanese Knotweed, and Purple Loosestrife.

All of the weeds have distinctive flowers and are easily identifiable with a little bit of training, said Greenberg.

These five have the potential for causing significant damage to infrastructure, waterways, and animal and human health. "We're trying to prevent them from becoming a big problem," said Greenberg. "Our goal for the species is to eradicate them from Whistler—on all jurisdictions."

Greenberg added that, “complete eradication,” is conceivable.

She said that it's important for the public to report the weeds to the SSISC if they happen to see them.

"Give us a call," she said, adding that someone from the organization will explain the next step to take depending on what weed was found.

For some species, like Scotch Broom, it’s possible for the public to remove the weeds themselves. But others, like Japanese Knotweed, are more problematic. “Japanese Knotweed can regenerate from tiny fragments of the root or stem,” said Greenberg.

SSISC will be hosting an information booth at the Pemberton and Squamish farmers’ markets on June 22 and 23, respectively. Drop by to learn more.

Or you can check out the posters and learn more about the five problem weeds on the organization’s website at www.ssisc.ca/whistlerwanted.

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