Helianthus angustifolius, Swamp Sunflower


A recent addition to our seed bank, H. angustifolius is an excellent wildflower for wet gardens and areas for restoration.

  • Listing ID: 3857
  • Duration: Perennial
  • Soil Moisture: 1-5 (dry to wet): 3-5
  • Stratification: 30 days cold moist stratification required
  • Bloom Time: September-October
  • Family: Asteraceae (Aster)
  • Sunlight Exposure: Partial shade to full sun
  • Latin Name: Helianthus angulstifolius
  • Common Name: Swamp Sunflower, Narrowleaf Sunflower
  • Eco-Region: 251