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NC Native Plant Society:
Plant Details

Helianthus decapetalus

Thinleaf Sunflower, Forest Sunflower

Scientific Name:

Helianthus decapetalus

Genus:

Helianthus

Species Epithet:

decapetalus

Common Name:

Thinleaf Sunflower, Forest Sunflower

Plant Type

Herb/Wildflower

Life Cycle

Perennial

Plant Family

Asteraceae (Aster Family)

Native/Alien:

NC Native

Invasive Status:

(*Key)

Size:

1-3 ft., 3-6 ft.

Bloom Color(s):

Yellow

Light:

Sun - 6 or more hours of sun per day, Part Shade - 2 to 6 hours of sun per day

Soil Moisture:

Moist

Bloom Time:

July, August, September, October

Growing Area:

Mountains, Piedmont, Sandhills, Coastal Plain

Habitat Description:

Mesic woodlands and forests, oak savannas. Fairly common in the NC mountains and Piedmont; extremely rare into the central Coastal Plain

Leaf Arrangement:

Opposite

Leaf Retention:

Deciduous

Leaf Type:

Leaves veined, not needle-like or scale-like

Leaf Form:

Simple

Life Cycle:

Perennial

Wildlife Value:

Important for Wildlife

Landscape Value:

Suitable for home landscapes

State Rank:

S4: Apparently secure, S5: Secure (*Key)

Global Rank:

G5 - Secure (*Key)

Leaf stalks at least 1/4" long; leaves thin, sharply toothed, mostly smooth

Surry County NC

The Scientific Name is Helianthus decapetalus. You will likely hear them called Thinleaf Sunflower, Forest Sunflower. This picture shows the Leaf stalks at least 1/4

Lisa Lofland Gould

Links:

USDA PLANTS Database Record



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