Giant Sunflower

Helianthus giganteus L. - Aster family

Size

Mature Height: Up to around 12.0 feet

Plant Type: Forb/herb

Features

Flower Color: Yellow

Conspicuous Flowers: Yes

Bloom Time: Early Summer, Mid Summer, Late Summer, Fall

Conditions

Shade Tolerance: Intolerant

Ecosystem Interactions

Pollinators: Native Bees; Bombus; Honey Bees; Beetles, Wasps, Flies; Moths; Butterflies; Monarchs; Larval Host (Moth)

Larval Species depending on Giant Sunflower: Cremastobombycia ignota, Eucosma sombreana, Gnorimoschema ambrosiaeella, Papaipema maritima, Papaipema necopina

Native Range

  • USA:  Connecticut, Delaware, District of Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, New Jersey, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Vermont, Virginia, West Virginia, Wisconsin
  • CAN:  New Brunswick, Newfoundland, Nova Scotia, Ontario, Québec
Regional Native Status: L48 (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.