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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Iva annua (Annual marshelder)
Lynn, Janice

Iva annua

Iva annua L.

Annual Marshelder, Marshelder, Sumpweed

Asteraceae (Aster Family)


USDA Symbol: IVAN2

USDA Native Status: L48 (N)


From the Image Gallery

26 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Deltoid , Elliptic , Ovate
Inflorescence: Head , Spike
Size Notes: To about 5 feet in height.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Jul , Aug , Sep , Oct , Nov


USA: AL , AR , CO , FL , GA , IA , IL , IN , KS , KY , LA , MA , ME , MI , MO , MS , NC , ND , NE , NM , OH , OK , PA , SC , SD , TN , TX , VA , WI , WV


Use Food: Cultivated for its seed by indigenous peoples of eastern North America before the arrival of maize.
Attracts: Birds

Find Seed or Plants

Order seed of this species from Native American Seed and help support the Wildflower Center.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX

Herbarium Specimen(s)

NPSOT 1112 Collected Oct 6, 1994 in Bexar County by Harry Cliffe

1 specimen(s) available in the Digital Herbarium

Additional resources

USDA: Find Iva annua in USDA Plants
FNA: Find Iva annua in the Flora of North America (if available)
Google: Search Google for Iva annua


Record Modified: 2018-03-22
Research By: TWC Staff

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