Specimen Information

Reynoutria japonica
(Itadori knotweed)
Plants
Exotic

Specimen ID1877368
GroupPlants
GenusReynoutria
Speciesjaponica
Common NameItadori knotweed
StateTN
CountyCarter
LocalityLaurel Fork behind McDonalds in Hampton
Mapping AccuracyAccurate
HUC8 NameWatauga, North Carolina, Tennessee
HUC8 Number06010103
HUC10 NameDoe River
HUC10 Number0601010304
HUC12 NameLaurel Fork
HUC12 Number060101030404
Map
Collection Day13
Collection Month5
Collection Year2025
Year AccuracyActual
Statusestablished
CommentsThe invasive is one of the many invasive plants that is re-establishing its self after the extreme flooding of Hurricane Helene. Knotweed has been in the county for at a min ten years. I'm going to try to log as many sites as I find.I am in the field much of the time as I work for the county's stormwater program.
Record TypeNAS sighting report
VerifierIan Pfingsten
Number Collected75
Photo
Reynoutria japonica
Reynoutria japonica
Reynoutria japonica
Reynoutria japonica


Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/6/2025].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.