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Polygonum hydropiperoides Michx.
Mild water-pepper, Swamp smartweed

Polygonum hydropiperoides
Copyright by: Roger L. Hammer

Family: Polygonaceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Perennial

Native Range: Widespread in North America, the West Indies (not Lesser Antilles), Mexico, Central America and South America.

Map of select IRC data for peninsular Florida

IRC SOUTH FLORIDA Status: Apparently Secure

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

SOUTH FLORIDA Cultivated Status: Cultivated

Comments: Visit our Natives For Your Neighborhood website for more information and images.

Other data on Polygonum hydropiperoides available from :

Atlas of Florida Vascular Plants
Polygonum hydropiperoides has been found in the following 50 conservation areas :
Occurrence Native Status
Arthur R. Marshall Loxahatchee National Wildlife Refuge Present Native
Babcock Ranch Preserve Present Native
Big Cypress National Preserve Present Native
Caloosahatchee Creeks Preserve Present Native
Cayo Costa State Park Present Native
Coconut Creek Maple Swamp Natural Area Present Native
Corkscrew Regional Ecosystem Watershed (CREW) Present Native
Danforth Park Present Native
Doris Davis Forman Wilderness Preserve Natural Area Present Native
Dupuis Reserve Present Native
Everglades and Francis S. Taylor Wildlife Management Area Present Native
Everglades National Park Present Native
Fakahatchee Strand Preserve State Park Present Native
Fern Forest Nature Center Present Native
Fred C. Babcock-Cecil M. Webb Wildlife Management Area Present Native
Frenchman's Forest Natural Area Present Native
Frog Pond/L-31 N Transition Lands Present Native
Grassy Waters Preserve Present Native
Halpatiokee Regional Park Present Native
Hawk's Hammock Park Present Native
Hillsboro Pineland Natural Area Present Native
Holey Land Wildlife Management Area Present Native
Hugh Taylor Birch State Park Present Native
J.W. Corbett Wildlife Management Area Present Native
John D. MacArthur Beach State Park Present Native
Jonathan Dickinson State Park Present Native
Juno Dunes Natural Area Present Native
Lake Okeechobee Marshes Present Native
Long Key Natural Area & Nature Center Present Native
Loxahatchee River Natural Area Present Native
Loxahatchee Slough Natural Area Present Native
Lucille Hammock Present Native
Navy Wells Pineland Preserve Present Native
Nicodemus Slough Present Native
Okaloacoochee Slough State Forest, Okaloacoochee Slough Wildlife Management Area Present Native
Pal-Mar Present Native
Picayune Strand State Forest Present Native
Prairie Pines Preserve Present Native
Riverbend Park Present Native
Rookery Bay National Estuarine Research Reserve Present Native
Royal Palm Beach Pines Natural Area Present Native
Savannas Preserve State Park Present Native
Seabranch Preserve State Park Present Native
Secret Woods Nature Center Present Native
Six Mile Cypress Slough Preserve Present Native
South Dade Wetlands Present Native
Southern Glades Present Native
Wild Turkey Strand Preserve Present Native
Yamato Scrub Natural Area Present Native
Yellow Fever Creek Preserve Present Native

Polygonum hydropiperoides has been found in the following 9 counties :
Occurrence Native Status
Broward County Native
Charlotte County Native
Collier County Native
Hendry County Native
Lee County Native
Martin County Native
Miami-Dade County Native
Monroe County (Mainland) Native
Palm Beach County Native

Polygonum hydropiperoides has been found in the following 15 habitats :
Alluvial Forest
Basin Marsh
Blackwater Stream
Coastal Interdunal Swale
Depression Marsh
Disturbed Wetland
Dome Swamp
Floodplain Marsh
Floodplain Swamp
River Floodplain Lake
Sinkhole
Slough
Strand Swamp
Swale
Swamp Lake

All Images:

Polygonum hydropiperoides
Copyright by: Roger L. Hammer
Polygonum hydropiperoides
Copyright by: Shirley Denton
Polygonum hydropiperoides
Copyright by: Shirley Denton
Polygonum hydropiperoides
Copyright by: Shirley Denton