NC Native Plant Society:
Plant Details

Helianthus angustifolius

Narrowleaf Sunflower, Swamp Sunflower

Scientific Name:	Helianthus angustifolius
Genus:	Helianthus
Species Epithet:	angustifolius
Common Name:	Narrowleaf Sunflower, Swamp Sunflower
Plant Type	Herb/Wildflower
Life Cycle	Perennial
Plant Family	Asteraceae (Aster Family)
Native/Alien:	NC Native
Invasive Status:	^(*Key)
Size:	3-6 ft., 6-12 ft.
Bloom Color(s):	Yellow
Light:	Sun - 6 or more hours of sun per day
Soil Moisture:	Moist, Wet
Bloom Time:	August, September, October
Growing Area:	Mountains, Piedmont, Sandhills, Coastal Plain
Habitat Description:	Savannas, ditches, marshes, other wet habitats. Common to locally abundant in the Coastal Plain and Sandhills; common in the eastern Piedmont, but uncommon in the central and western Piedmont. Fairly common in the southern mountains but essentially absent in the central and northern mountains.
Leaf Arrangement:	Alternate, 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:	Recommended and Available
State Rank:	S5: Secure ^(*Key)
Global Rank:	G5 - Secure ^(*Key)
Notes:	leaves commonly alternate except near the base
Narrow, sessile leaves with up to 21 ray florets and a deep red to purplish disk Forsyth County NC (meadow garden) Lisa Lofland Gould
Narrow, sessile leaves and narrow, pointed, overlapping bracts Forsyth County NC (meadow garden) Lisa Lofland Gould
Leaves are very narrow, scabrous, and their margins curl inward. Nick’s Creek Preserve, Moore County, NC Bettina Darveaux
Links:	USDA PLANTS Database Record