Helianthus angustifolius, or swamp sunflower, grows up to 6 feet tall and thrives in moist, well-drained soil, making it ideal for wetland gardens. Preferring full sun, this robust perennial blooms from late summer to early fall, attracting pollinators like butterflies and bees. It pairs beautifully with native grasses and other moisture-loving plants, enhancing naturalistic landscapes. At Swallowtail Center, we recommend this species for its ecological benefits and striking yellow blooms, perfect for wildlife gardens, rain gardens, and erosion control. Embrace sustainable gardening with a plant that supports both beauty and biodiversity.