Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Helianthus annuus L. image
Photographer: Robert R. Kowal           

Botanical Illustration

Merel R. Black

Robert R. Kowal

Janice Stiefel
Family Asteraceae
Helianthus annuus L.
common sunflower, garden sunflower
Helianthus: derived from two Greek words helios, "sun," and anthos, "flower," in reference to the sunflower's supposed tendency to always turn toward the sun
annuus: Latin for "yearly" usually referring to a plant which lives only one season
Hazardous hazard symbol- click for definition
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - naturalized
Plant: erect, annual, 3'-10' tall forb with leafy, roughly hairy stems
Flower: head 3"-6" wide with yellow rays and a flat, dark disk at least 1 1/4" wide; inflorescence with several heads in a branched cluster, escaped cultivated forms usually with only 1 large head; blooms July-Sept.
Fruit:dry, edible seed
Leaf:mostly alternate, long-stalked, largest wide and oval, rough on both sides
Habitat: sun; moist; disturbed sites

More Information Natural Communities Herbarium Specimens
All Helianthus list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Helianthus annuus L. subsp. jaegeri (Heiser) Heiser
Helianthus annuus L. subsp. lenticularis (Douglas ex Lindl.) Cockerell
Helianthus annuus L. subsp. texanus Heiser
Helianthus annuus L. var. annuus
Helianthus annuus L. var. lenticularis (Douglas ex Lindl.) Steyerm.
Helianthus annuus L. var. macrocarpus (DC.) Cockerell
Helianthus annuus L. var. texanus (Heiser) Shinners
Helianthus aridus Rydb.
Helianthus lenticularis Douglas ex Lindl.

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