Knotweed is a fast growing plant that resembles bamboo, with heart or spade shaped leaves.
There are several knotweed patches in and around the community that have been identified for treatment this year, so you may see a Nova Pacific Environmental work truck in the neighbourhood once or twice every two weeks during the treatment season, which extends from May until September.
Jeff Prowse, Environmental Consultant from Nova Pacific Environmental, will be providing the treatment, and you can approach him at any time with questions about the program.
The early stages of the treatment involve cutting away the other species from the knotweed, which usually consists of blackberries and tall grasses, along with stems from the previous year’s knotweed growth.
Removing the other species from the knotweed’s vicinity allows for easier and quicker application of the herbicide treatment, which begins in June when the knotweed is near maturity and extends until after the plants flower in September.
The herbicide used is glyphosate, which is the main active ingredient in Roundup. The application method used is stem injection, which inserts the herbicide directly into the plant, eliminating the chance of cross contamination of other desirable plants in the area.
The herbicide is fast acting, with the plant showing signs of death within 10 days; these signs include leaves turning yellow, and then dropping off the plant.
To ensure the most successful treatment, it is important that the plants be allowed to grow to the proper size.
We would ask that you do not cut the plants or attempt to dig them up, as this can assist in the spread of the knotweed and hinder the treatment program.
In addition, please do not try to treat the knotweed with any herbicide, as it will not be strong enough to destroy the plant; this can lead to plants becoming resistant to herbicide.
If patch conditions result in a required change in treatment from stem injection to spraying, the residents in the vicinity will be contacted to discuss how it may affect them.
Every effort will be made to limit the treatment to stem injection, as it is the least disruptive way of treating the knotweed.
If you have any questions or concerns, please feel free to contact Danielle Gabriel in Lands or Jay Hope, Corporate Affairs Director at 604-796-2177. You may also approach Jeff on site or on his cell at 778-868-3483 with any questions.