Invasive SpeciesJapanese knotweed

Fallopia japonica
FOUND by AGospodarek
2013-09-27
Portland, ME
ID Confirmed
Quality checked by HAM
Peer reviewed by
Field Notes
The weather was nice. We heard cars and voices and saw knotweed, water, basketball court and houses. We smelled grass and salt water. It was hard to position the quadrat flat on the ground. We found burdock/grass/dandelion close to the outer edge of the quadrat. The knotweed was most of the rest of the quadrat.
Supporting Evidence
Photo of my evidence.
Large stand of tall plants on hillside, most have already flowered
Photo of my evidence.
Hollow stem and swollen joints
Photo of my evidence.
large alternate leaves that have a spade shape and are hairless
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: 
20-50
Coverage: 
Reproduction: 
Flower (plants)
Vegetative structures (plants)
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
We’re sorry, JavaScript is required to view the map. If JavaScript is you may wish to upgrade to a newer browser in order to view this map.
Map this species
Latitude: 
N 43.670792 °
Longitude: 
W -70.247038 °
Observation Site Information
A photo of our study site.
Habitat: 
Upland - Developed areas
Trip Information
Name:
Eastern Prom1
Trip date: 
Fri, 2013-09-27 10:29
Town or city: 
Portland, ME
Type of investigation: 
Species and Habitat Survey
Ecosystem: 
Upland
Watershed: 
Presumpscot
Habitat Observations
Species diversity: 
4 different species
Evidence of vectors: 
People
lawn mower
Tree canopy cover: 
Open to 1/4 covered
Soil moisture: 
Moist
Login or register to post comments