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03/27/2023Ashland covered bridge closed for DelDOT repairs. Find an alternate route.Details

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Mt. Cuba Center view of the West Slope Path
Explore the Gardens Virtual Tour Virtual Tour
HOURS

Gardens open on Saturday, April 1. Plan your visit today!

Mt. Cuba Center view of the West Slope Path
Explore the Gardens Virtual Tour Virtual Tour
HOURS

Gardens open on Saturday, April 1. Plan your visit today!

Mt. Cuba Center view of the West Slope Path
Explore the Gardens Virtual Tour Virtual Tour
HOURS

Gardens open on Saturday, April 1. Plan your visit today!

Mt. Cuba Center view of the West Slope Path
Explore the Gardens Virtual Tour Virtual Tour
HOURS

Gardens open on Saturday, April 1. Plan your visit today!

Explore the Gardens Virtual Tour Virtual Tour
HOURS

Gardens open on Saturday, April 1. Plan your visit today!

03/27/2023
Ashland covered bridge closed for DelDOT repairs. Find an alternate route.

Details
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Mt Cuba Center
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Helianthus angustifolius

Native Plants

Swamp Sunflower

3 Photos


Summary

Swamp sunflower is a tall, striking plant for the perennial border or naturalistic meadow garden. Bright yellow, 2½” daisy-like flowers grow on 6’ stems clothed in rich green needle-like leathery foliage. The clusters of flowers standout when viewed at a distance or close up. Helianthus angustifolius lives in a wide range of soil moisture conditions.  Swamp sunflower is special because it is among the last plants to bloom in late autumn. This sun loving perennial grows well among Schizachyrium scoparium, Andropogon virginicus, Symphyotrichum georgianum, Symphyotrichum oblongifolium, and Euthamia caroliniana.


More Details

  • Plant Type
    perennial 
  • Sun/Shade Conditions
    filtered-shade, full-sun 
  • Foliage Character
    deciduous 
  • Soil Moisture
    average, dry, moist 
  • Flowering Period
    late-fall, mid-fall
  • Soil PH
    adaptable 
  • Flower Color
    yellow 
  • Summer Foliage Color
    green 
  • Fall Foliage Color
    green 
  • Fruit/Seed Color
    green