A Richmond News reader sent in a photo of a sign warning of the use of the herbicide Roundup in Terra Nova.
While the reader was concerned blackberries were being sprayed during prime berry picking season, the City of Richmond has clarified no blackberries were sprayed, rather the target of the Roundup spray was knotweed, an invasive species that can spread quickly.
A city spokesperson said a herbicide was used “selectively” to treat the knotweed, growing behind the posted sign.
“Due to the selective nature of the treatment, the product would not have come into contact with the surrounding blackberry bushes,” explained city spokesperson Kim Decker.
Knotweed is considered a “significant risk” to houses, infrastructure as well as to the environment, Decker added.
Knotweed was originally introduced to B.C. in gardens and landscaping “due to their rapid growth and attractive appearance,” according to the Invasive Species Council of BC. They spread by seeds, root and stem fragments, which means they are very hard to control.
Decker explained herbicides are the most effective way to treat knotweed, and are licensed and regulated by the BC Ministry of Environment.
Those who apply the herbicide must be certified or be working under the supervision of someone with a full certificate.
The timing of treatment depends on the growth stage of the plant as well as the weather, Decker clarified.
For more information, contact the City of Richmond 604-276-4316 or email [email protected].
