Not knotweed!

I brought classes to nearby 4 Seasons Lodge to look for japanese knotweed and redtwig dogwood. The 4 Seasons Trail Association is a volunteer run organization devoted to providing our community with a beautiful new lodge complete with expansive decks and fireplace, and about 10-15 kilometers of trails for non-motorized recreation including walking, mountain biking, Nordic skiing, and snowshoeing. Most of the area is either open field or wooded, but has been logged or has seen ATV traffic of some sort. It's located right at the edge of town, across the street from some apartment buildings and homes, and next to a big town water tank. We know japanese knotweed is invasive and that it is present nearby in our town, some is close to the lodge about a mile away, maybe less. The native plant redtwig dogwood, which is a favorite moose browse, is plentiful around the lodge, and looks like japanese knotweed somewhat. So we used this exercise to become experts at distinguishing between the two. The students entered their observations, underwent quality checks and peer reviews, then I encouraged them to publish if they felt their work was good enough. Everybody published! We've spent two classes discussing our results and what we want to do next, and now it's time for them to go back and finish their science notebooks for Knotweed. Here is a sample, but it isn't finished. To see their observations, just do an advanced search and type in Madawaska.

Project Information
City or Town: 
Madawaska
School or Organization: 
Madawaska Middle High School
Species: 
Scientific name:
Fallopia japonica
Common name:
Japanese knotweed
Habitat: 
Upland - Field
Resources I used to create this project: 
I used the species ID cards and a local college student who is expert at local botany.