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Helianthus Angustifolius: Swamp Sunflower

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The Swamp Sunflower USDA plant hardiness zones are 6-9. This plant grows throughout the eastern part of the United States

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Here's how your plants will look on arrival. All plants are dormant with no leaves or foliage.
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Helianthus Angustifolius: Swamp Sunflower

Description: Helianthus Angustifolius, known as Swamp Sunflower, is apart of the Aster family. The Aster family includes herbs and sometimes shrubs and vines. The plant is a species of sunflower. These golden yellow perennials are an upright clumping wildflower. The stem and leaves are deep green. The stem has coarse hairs, especially on the lower part of the plant. These daisy-like flowers are 3 inches across with 8-20 florets emanating from the brown centered disk. The brilliant yellow flowers attract humans, birds, and insects to its flame-like brillance. The Swamp Sunflower grows 3-6 feet tall.

Cultivation: The Swamp Sunflower is native to the United States and is a wetlands plant. This flower grows well in full and partial sunlight. The plants' soil can be in areas that are wet, including boggy sites that remain waterlogged for extended periods. The earth needs to be moderately fertile and humus rich. The growth rate and maintenance are moderate. Swamp Sunflower can grow in different types of soil: sandy, sandy loam, medium loam, clay loam, clay, and acid-based. The active growth period for the Swamp Sunflower is Spring and Summer. The growth rate is moderate. The conservation of this plant is secure according to the USDA.

Growing Zones: The Swamp Sunflower USDA plant hardiness zones are 6-9. This plant grows throughout the eastern part of the United States. These flowers grow in coastal marshlands and along roadside ditches. The native range of this plant is AL, AR, DC, DE, FL, GA, IL, IN, KY, LA, MD, MO, MS, NC, NJ, NY, OH, OK, PA, SC, TN, TX, VA, and WV. Floodplains and bottomlands are where this plant flourishes. This plant is known for its durability and adaptability. Swamp Sunflowers are resilient and low maintenance, perfect for rain gardens.

Common names: Narrowleaf sunflower, Swamp sneezeweed, and Narrow-leaved sunflower.

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