Helianthus giganteus | giant sunflower

Giant sunflower (Helianthus giganteus) is a tall plant can be found growing naturally in swamps and moist lowlands throughout eastern and central North America. This perennial can top ten feet and is perhaps best saved for use in naturalized areas, especially where water is present. The creeping rootstock can form large colonies with time. Zones: (4)5 to 9 Family: Asteraceae Type: Herbaceous perennial Height: 36 to 120 in. Spread: 24 to 48 in. Exposure: full sun Soil: moist, wet Bloom Time: July to October Native Range: North America from New York and Ontario to Minnesota south to Georgia and Kentucky; naturalized northeastward Syn. Helianthus alienus, Helianthus borealis