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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Ambrosia trifida
blood ragweed, giant ragweed, great ragweed, horseweed, perennial ragweed, tall ragweed, Texan great ragweed
Herbert Hoover National Historic Site
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Uncommon

Scientific Name with Authority:		Ambrosia trifida L.
Park Preferred Common Name(s):
Park Synonyms:

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Asterales, Family Asteraceae, Genus Ambrosia, Species Ambrosia trifida


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		IA: S5
Evidence:		0 Observations, 1 Vouchers, 25 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Abraham Lincoln Birthplace National Historical Park	Agate Fossil Beds National Monument
Allegheny Portage Railroad National Historic Site	Antietam National Battlefield
Appomattox Court House National Historical Park	Assateague Island National Seashore
Badlands National Park	Bent's Old Fort National Historic Site
Big South Fork National River and Recreation Area	Big Thicket National Preserve
Bighorn Canyon National Recreation Area	Blue Ridge Parkway
Boston Harbor Islands National Recreation Area	Buffalo National River
Camp Nelson National Monument	Carl Sandburg Home National Historic Site
Catoctin Mountain Park	Chattahoochee River National Recreation Area
Chesapeake and Ohio Canal National Historical Park	Chickamauga and Chattanooga National Military Park
Chickasaw National Recreation Area	Cumberland Gap National Historical Park
Curecanti National Recreation Area	Cuyahoga Valley National Park
Delaware Water Gap National Recreation Area	Effigy Mounds National Monument
Eisenhower National Historic Site	First State National Historical Park
Fort Laramie National Historic Site	Fort Larned National Historic Site
Fort Union Trading Post National Historic Site	Fort Washington Park
Friendship Hill National Historic Site	Gateway National Recreation Area
George Washington Carver National Monument	George Washington Memorial Parkway
Gettysburg National Military Park	Grand Portage National Monument
Great Falls Park	Great Smoky Mountains National Park
Guilford Courthouse National Military Park	Harpers Ferry National Historical Park
Homestead National Historical Park	Hopewell Culture National Historical Park
Hopewell Furnace National Historic Site	Hot Springs National Park
Hovenweep National Monument	Indiana Dunes National Park
Jean Lafitte National Historical Park and Preserve	Joshua Tree National Park
Kenilworth Park and Aquatic Gardens	Kennesaw Mountain National Battlefield Park
Knife River Indian Villages National Historic Site	Lake Meredith National Recreation Area
Lincoln Boyhood National Memorial	Lyndon B. Johnson National Historical Park
Manassas National Battlefield Park	Martin Van Buren National Historic Site
Mill Springs Battlefield National Monument	Minute Man National Historical Park
Mississippi National River and Recreation Areas	Missouri National Recreational River
Monocacy National Battlefield	Natchez Trace Parkway
New River Gorge National Park and Preserve	Nez Perce National Historical Park
Niobrara National Scenic River	Oxon Cove Park and Oxon Hill Run
Ozark National Scenic Riverways	Pea Ridge National Military Park
Pipestone National Monument	Rock Creek Park
Saint Croix National Scenic Riverway	San Antonio Missions National Historical Park
Scotts Bluff National Monument	Shenandoah National Park
Sleeping Bear Dunes National Lakeshore	Tallgrass Prairie National Preserve
Theodore Roosevelt Island National Memorial	Tumacacori National Historical Park
Upper Delaware Scenic and Recreational River	Valley Forge National Historical Park
Vicksburg National Military Park	Voyageurs National Park
Washita Battlefield National Historic Site	Wilson's Creek National Battlefield
Wind Cave National Park	Wolf Trap National Park for the Performing Arts


Last Modified Date:	2/5/2004

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 11/3/2025 11:02:22 PM

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	11/3/2025 11:02:22 PM

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