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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Polygonum aviculare
prostrate knotweed, yard knotweed
Apostle Islands National Lakeshore
			Record Status: Approved
Occurrence:	Present
Nativeness:	Non-native
Abundance:	Uncommon

Scientific Name with Authority:		Polygonum aviculare L.
Park Preferred Common Name(s):
Park Synonyms:

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


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5,GNR
NatureServe State Rank:		WI: SNA
Evidence:		0 Observations, 0 Vouchers, 3 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Acadia National Park	Alagnak Wild River
Alibates Flint Quarries National Monument	Anacostia Park
Aniakchak National Monument and Preserve	Antietam National Battlefield
Arches National Park	Assateague Island National Seashore
Aztec Ruins National Monument	Badlands National Park
Bandelier National Monument	Bighorn Canyon National Recreation Area
Blue Ridge Parkway	Boston Harbor Islands National Recreation Area
Bryce Canyon National Park	Canyon De Chelly National Monument
Cape Cod National Seashore	Cape Hatteras National Seashore
Capitol Reef National Park	Casa Grande Ruins National Monument
Cedar Breaks National Monument	Chamizal National Memorial
Chattahoochee River National Recreation Area	Chickamauga and Chattanooga National Military Park
Chiricahua National Monument	City Of Rocks National Reserve
Colonial National Historical Park	Coronado National Memorial
Cowpens National Battlefield	Craters of the Moon National Monument and Preserve
Cumberland Gap National Historical Park	Cuyahoga Valley National Park
Delaware Water Gap National Recreation Area	Denali National Park and Preserve
Devils Postpile National Monument	Devils Tower National Monument
Dinosaur National Monument	Effigy Mounds National Monument
El Malpais National Monument	El Morro National Monument
Fire Island National Seashore	First State National Historical Park
Fort Donelson National Battlefield	Fort Laramie National Historic Site
Fort Union Trading Post National Historic Site	Fort Vancouver National Historic Site
Fossil Butte National Monument	Gateway National Recreation Area
Gauley River National Recreation Area	George Washington Birthplace National Monument
George Washington Carver National Monument	Gettysburg National Military Park
Glacier National Park	Glen Canyon National Recreation Area
Golden Spike National Historical Park	Grand Canyon National Park
Grand Portage National Monument	Grand Teton National Park
Great Falls Park	Great Sand Dunes National Park and Preserve
Great Smoky Mountains National Park	Hagerman Fossil Beds National Monument
Harpers Ferry National Historical Park	Hopewell Culture National Historical Park
Hopewell Furnace National Historic Site	Hovenweep National Monument
Hubbell Trading Post National Historic Site	Indiana Dunes National Park
Isle Royale National Park	Johnstown Flood National Memorial
Katmai National Park and Preserve	Kenai Fjords National Park
Kennesaw Mountain National Battlefield Park	Klondike Gold Rush National Historical Park
Lake Clark National Park and Preserve	Lake Mead National Recreation Area
Lake Meredith National Recreation Area	Lake Roosevelt National Recreation Area
Little River Canyon National Preserve	Mesa Verde National Park
Minute Man National Historical Park	Mississippi National River and Recreation Areas
Monocacy National Battlefield	Montezuma Castle National Monument
Mount Rainier National Park	Mount Rushmore National Memorial
Natchez Trace Parkway	Natural Bridges National Monument
New River Gorge National Park and Preserve	Nez Perce National Historical Park
North Cascades National Park	Olympic National Park
Oregon Caves National Monument	Ozark National Scenic Riverways
Parashant National Monument	Pecos National Historical Park
Petrified Forest National Park	Pictured Rocks National Lakeshore
Pipe Spring National Monument	Pipestone National Monument
Presidio of San Francisco	Prince William Forest Park
Richmond National Battlefield Park	Rock Creek Park
Sagamore Hill National Historic Site	Saguaro National Park
Saint Croix National Scenic Riverway	Saint-Gaudens National Historical Park
San Juan Island National Historical Park	Saratoga National Historical Park
Shenandoah National Park	Sleeping Bear Dunes National Lakeshore
Stones River National Battlefield	Suitland Parkway
Theodore Roosevelt National Park	Timpanogos Cave National Monument
Tumacacori National Historical Park	Tuzigoot National Monument
Upper Delaware Scenic and Recreational River	Valles Caldera National Preserve
Valley Forge National Historical Park	Vanderbilt Mansion National Historic Site
Voyageurs National Park	Walnut Canyon National Monument
Washita Battlefield National Historic Site	Wind Cave National Park
Wrangell - St Elias National Park and Preserve	Yellowstone National Park
Yucca House National Monument	Yukon-Charley Rivers National Preserve
Zion National Park


Last Modified Date:	12/21/2004

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 9/27/2025 8:06:31 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	9/27/2025 8:06:31 AM

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