Weather chills Derry's war against Japanese knotweed
Increasingly cold temperatures and the arrival of frost have made it more difficult to identify knotweed(Polygonum sachalininese), said commission member James Arruda.
The commission had launched a "knotweed attack" plan to identify where it's growing in Derry and develop a map. Commission members helped coordinate the effort as residents were asked to identify the weed if it was growing on their property.
"This is really an epidemic, " Ives said. It's going to take a couple of years. This is not a quick fix."
The best time to control the plant is from July 1 to the first killing frost.
At the transfer station, it should be disposed of with the garbage and not with leaves, she added.
"It is important when you cut it to take it off your property," Ives said. "Don't dump it anywhere; make sure it goes to the transfer station because they are set to take it."
As part of the campaign to eradicate knotweed, Arruda has worked with IT Director Doug Rathburn to develop a map that is divided into grids. Residents have been asked to take a grid or parcel and locate on the map were the knotweed lies.
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