NPSpecies Report Viewer

Park			Taxon Code
Show Comments?

Find

National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Polygonum cuspidatum
Japanese knotweed
Weir Farm National Historical Park
			Record Status: Approved
Occurrence:	Present
Nativeness:	Non-native
Abundance:	Unknown

Scientific Name with Authority:		Polygonum cuspidatum Siebold & Zucc.
Park Preferred Common Name(s):		Japanese knotweed
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Caryophyllales, Family Polygonaceae, Genus Fallopia, Species Polygonum cuspidatum


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:
NatureServe State Rank:
Evidence:		0 Observations, 0 Vouchers, 1 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Allegheny Portage Railroad National Historic Site	Apostle Islands National Lakeshore
Big South Fork National River and Recreation Area	Bluestone National Scenic River
Boston Harbor Islands National Recreation Area	Cape Cod National Seashore
Carl Sandburg Home National Historic Site	Chattahoochee River National Recreation Area
Colonial National Historical Park	Cuyahoga Valley National Park
Delaware Water Gap National Recreation Area	Eleanor Roosevelt National Historic Site
Fire Island National Seashore	Fort Donelson National Battlefield
Friendship Hill National Historic Site	Gateway National Recreation Area
Gauley River National Recreation Area	George Washington Memorial Parkway
Home of Franklin D. Roosevelt National Historic Site	Indiana Dunes National Park
Johnstown Flood National Memorial	Lincoln Boyhood National Memorial
Marsh-Billings-Rockefeller National Historical Park	Martin Van Buren National Historic Site
Minute Man National Historical Park	Morristown National Historical Park
Mount Rainier National Park	New River Gorge National Park and Preserve
North Cascades National Park	Olympic National Park
Oxon Run National Parkway	Petersburg National Battlefield
Prince William Forest Park	Richmond National Battlefield Park
Saint Croix National Scenic Riverway	Saratoga National Historical Park
Saugus Iron Works National Historic Site	Upper Delaware Scenic and Recreational River
Valley Forge National Historical Park	Vanderbilt Mansion National Historic Site


Last Modified Date:	6/13/2005

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/11/2025 4:38:30 AM

NatureServe Global Rank and State Rank

NatureServe. 2017. NatureServe Web Service. Arlington, VA. U.S.A. Available http://services.natureserve.org. Accessed: 12/4/2017. Updated quarterly.

This information is provided by NatureServe (www.natureserve.org) and its network of natural heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.


Species Profile	Page 1 of 1	10/11/2025 4:38:30 AM

Report Viewer Configuration Error