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Swamp Sunflower
Swamp Sunflower botanical plate
Field guide plate · click to zoom

Swamp Sunflower

Helianthus angustifolius

Honeybees visit swamp sunflower for its abundant late-season nectar and pollen, which supports colony buildup for winter. Peak bloom occurs from August to October, providing a vital resource when other flowers are scarce. This tall perennial (up to 8 feet) may require staking in exposed sites and prefers moist soils, though it tolerates average conditions; it is not invasive.

Nectarhigh
Pollenhigh
BloomAugust–October
USDA zones5-9
TypePerennial
Sunfull
NativeEastern North America
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