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Helianthus angustifolius - Swamp Sunflower
Helianthus angustifolius - Swamp Sunflower
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Helianthus angustifolius - Swamp Sunflower

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$15.00
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$15.00
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Leaves are lance shaped or linear.  Blades are long and narrow.  They average a 6” length with diameter of about ½”.  They are sessile with no stalks.  The smooth margins are usually revolute or rolled under.  The leaf surface is often glossy but sometimes dull.

Stems terminate in numerous 2-3” flowerheads.   The heads consist of dark globe shaped clusters of disc florets surrounded by 10-20 golden yellow ray florets.  

This is the latest flowering of the sunflowers.  Flowering begins in September or October and continues until frost.  The starry daisies are particularly striking against the intense blue October sky.

Height: 5-7 ft

Spread: 4-6 ft

Spacing: 3-4 ft

USDA Hardiness Zone: 5-9

Bloom Color: Yellow

Helianthus angustifolius Characteristics

Attracts Wildlife

  • Butterflies
  • Songbirds
  • Pollinators

Attributes

  • Drought Tolerant
  • Cut Flower
  • Clay Soil
  • Bog
  • Naturalizing
  • East-Coast Native

Exposure

  • Full Sun to Partial Shade

Deer Resistant

  • Deer Resistant

Flowering Months

  • November
  • October

Foliage Color

  • Green

Juglans nigra Tolerance (Black Walnut)

  • Yes