photo of Helianthus angustifolius

Helianthus angustifolius

Swamp Sunflower

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Swamp Sunflowers have yellow rays and reddish-brown to purple centers; they bloom September-November. Pinch the growth in early June for bushier...

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Description:

Swamp Sunflowers have yellow rays and reddish-brown to purple centers; they bloom September-November. Pinch the growth in early June for bushier plants with more blooms in the fall. This plant tolerates wet areas of the yard and bog-like conditions, and is suitable for rain gardens or the edges of water features. Use as a specimen plant or massed in beds.

Plant Details:

Other Common Names: Narrowleaf Sunflower

Plant Type: Flower, Perennial

New Jersey Native: Yes

Bloom Times: Late Summer to Fall

Bloom Colors: Yellow

Deer Resistance: None

Attracts Pollinators and Wildlife: Bees and Other Pollinators, Butterflies, Birds

Salt Tolerance: Medium

Hardiness Zone: 6a, 6b, 7a, 7b

Physiographic Region: All Regions in NJ

Grows in Special Ecoregions: Barrier Island/Coastal, Pinelands

Soil Characteristics

Soil Type: Loam, Organic, Sandy, Clay

Soil Moisture: Moist, Wet

Soil pH: Acidic, Slightly Acidic, Neutral

Light Needs of Plant

Optimal Light: Full Sun

Light Range: Full Sun, Partial Shade

Water Needs of Plant

Soil Moisture: Moist, Wet

Drought Tolerance: Low

Size and Growth Rate

Height: 2 - 4 ft

Spread: 2 - 4 ft

Growth Rate: Medium