Native Plants

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Wasowski, Sally and Andy

Helianthus grosseserratus

Helianthus grosseserratus M. Martens

Sawtooth Sunflower

Asteraceae (Aster Family)

Synonym(s): Helianthus grosseserratus ssp. maximus, Helianthus grosseserratus var. hypoleucus, Helianthus instabilis

USDA Symbol: hegr4

USDA Native Status: L48 (N), CAN (I)

From the Image Gallery

39 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: From 3 to about 15 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

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

Distribution

USA: AR , CT , DE , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NH , NJ , NY , OH , OK , PA , SD , TN , TX , VA , WA , WI , WV
Canada: ON , QC

Growing Conditions

Light Requirement: Sun
Soil Moisture: Moist
Soil pH: Circumneutral (pH 6.8-7.2)

Benefit

Use Wildlife: Honeybees, Bumblebees, Miner bees. Gamebirds, songbirds and rodents eat the seeds. Sunflower Borer Moths eat the pith of the stems.
Conspicuous Flowers: yes
Attracts: Birds , Butterflies
Larval Host: Checkerspot.

Value to Beneficial Insects

Special Value to Native Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FAC		FAC		FACW	FACW		FACW	FACW	FAC

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.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

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

Metadata

Record Modified: 2025-02-26
Research By: TWC Staff

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