University of Illinois Extension
Tall Sunflower (Helianthus giganteus) - Wildflowers

Directory of Wildflowers

Tall Sunflower
Helianthus giganteus

Group of Tall Sunflowers
Group of Tall Sunflowers

Quick Profile

Exposure
Full Sun
 
Mature Height
4 - 10 Feet
 
USDA Hardiness Zones
3 - 8 
 
Native To:
Illinois
Indiana
Iowa
Michigan
Ohio
Wisconsin
 
Soil Conditions
Moist, Well-Drained
Wet
 
Bloom Color
Yellow
 
Bloom Season
August - October
 

Features

Bright yellow daisies and dull red-purple stems.

Culture

Full sun; moist, well drained to wet sites.

Notes

Found in thickets, fields and swampy areas. Listered as endangered in Illinois