giant sunflower
Aster Family
Helianthus giganteus
Asteraceae
--more--
common name
giant sunflower
accepted scientific name
Helianthus giganteus
L.
rules for finding collection records
Helianthus giganteus (1039)
family name
Asteraceae
| Image Author: ©2012 Dan Mullen
Image License: CC BY-NC-ND
Image Source
Category: Wildflowers
Flowers: Many petals
Petal colors: 
Flower size is 2. to 3. inches
Number of ray petals: 10 to 20
Leaf: Alternate, Opposite
Plant Observed last week of June thru 2nd week of October
Native
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