Invasive SpeciesJapanese knotweed

Fallopia japonica
FOUND by littleriver11
ID Confirmed
Quality checked by litlleriver15
Peer reviewed by
Field Notes
We found a huge area covered in the knotweed. Our big question was what does it look like in the full winter form. It was very damp out so we could smell the wet grass and dirt. We saw a dead tree, lots of Japanese knotweed and people. We could hear rain, people, and birds.
Supporting Evidence
Photo of my evidence.
The leaf is of the knotweed at this times color is a bright or dark orange. The leaf size is about 7 inches. The leaf shape is smooth and oval with a tip at the end. The stem is going to start turning a light brown or it is a very dark green. The size of the stem is about 39 inches long. It has something like a knot at the end of each break. The stem is the whole bamboo and has the same texture as bamboo has. I know that because saw this on the vital signs website.
Photo of my evidence.
There were no flowers on this patch of knotweed that we found this one used its leaves when goes into its winter form and that is how it would spread and turn into an invasive species. The leaves would fall off like it was dying and it turns brown like leaves on a tree.
Photo of my evidence.
The habitat that we were in was a forest it was right next to a walking trail and it was a little bit off of it. There was a dead tree where we were right next to. It doesn't look like that area has been touch yet, but we could see a sand pit right through the trees.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Fallopia japonica
Common name:
Japanese knotweed
Count of individuals: 
Between 1/2 and 3/4
Flower (plants)
Sampling method: 
Quadrat (randomized- placement)
Photo of our sampling method.
Place Studied
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Map this species
N 43.664104 °
W -70.445937 °
Observation Site Information
A photo of our study site.
Upland - Forest
Trip Information
Weeks Road Trail System
Trip date: 
Fri, 2018-10-12 08:00
Town or city: 
Type of investigation: 
Species and Habitat Survey
Habitat Observations
Species diversity: 
3 different species
Evidence of vectors: 
Walking trail
Tree canopy cover: 
Between 1/2 and 3/4
Soil moisture: 


you did a good job (:

Thank you