Helianthus angustifolius (Swamp Sunflower or Narrowleaf Sunflower) is a bold, upright perennial native to the floodplains and bottomlands of Texas and the southeastern U.S. This late-season bloomer puts on a stunning display of bright yellow, daisy-like flowers from late summer through fall, reaching heights of up to 5 feet. Its narrow, dark green leaves and tall stems make it perfect for the back of a wetland border, rain garden, or pollinator planting. It’s especially attractive to birds and beneficial insects, adding beauty and biodiversity to moist landscapes.

Scientific Name: Helianthus angustifolius

Origin: Texas and Southeastern U.S.

Native Habitat: Floodplains, moist bottomlands

Height: Up to 5 feet

Spread: 2 to 3 feet

Light: Part Shade

Water: Medium to Wet

USDA Zones: 6-10

Bloom: August to November