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Helenium amarum var. amarum (Yellow bitterweed)
Sweeney, Collene

Helenium amarum var. amarum

Helenium amarum (Raf.) H. Rock var. amarum

Yellow Bitterweed, Yellowdicks

Asteraceae (Aster Family)

Synonym(s): Helenium tenuifolium


USDA Native Status: L48 (N)

The genus is thought to have been named by Linnaeus for Helen of Troy. The legend is that the flowers sprung up from the ground where her tears fell.


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Notes: Up to about 3 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: Jul , Aug , Sep , Oct
Bloom Notes: May bloom February to December.


USA: AL , AR , CA , CT , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , MI , MO , MS , NC , NE , OH , OK , PA , SC , TN , TX , VA , WI

Value to Beneficial Insects

Special Value to Native Bees

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

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

Web Reference

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

Additional resources

USDA: Find Helenium amarum var. amarum in USDA Plants
FNA: Find Helenium amarum var. amarum in the Flora of North America (if available)
Google: Search Google for Helenium amarum var. amarum


Record Modified: 2023-03-21
Research By: TWC Staff

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