Helianthus angustifolius

Swamp Sunflower, Narrow-Leaf Sunflower

Family: Asteraceae Aster

Type Perennial
USDA Hardiness range 6A - 9B
Exposure Full sun
Bloom color Yellow
Bloom time Early Fall to Late Fall
Water needs Moist to wet
Landscape uses Border, container, specimen
Height 5' to 7' / 1.60m to 2.20m
Spread 36" to 4' / 90cm to 1.20m
Growth rate Moderate
Persistence Deciduous, broadleaf
Bloom attributes Attracts butterflies, suitable for cut flowers, suitable for dried flowers
Leaf color Green
Fruit color n/a
Soil pH requirements Neutral, alkaline, slightly alkaline
Soil type Sandy, clay, loamy
Form Spreading or horizontal, upright or erect
Attributes and features Attracts birds, native to North America, invasive