Helianthus giganteus


Common Name: tall sunflower
Plant Type:Herbaceous
Light (original): sun, part sun
Light Requirements: Sun, Part Sun
Height:6 to 10 feet
Width:4 to 5 feet
Duration:Perennial
Habitat:Wetland
Soil Type:moist to wet
Soil Moisture:Mesic, Wet
USDA Zones:3 to 9
Flower Colour:yellow
Bloom Time:fall
Comments:Birds like the seeds.
Germination:Seed will germinate within 4 weeks if sown at 70°F
Picture Copyright: Thomas G. Barnes @ USDA-NRCS PLANTS Database / Barnes, T.G. & S.W. Francis. 2004. Wildflowers and ferns of Kentucky. University Press of Kentucky.