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Often growing to more than nine feet in height, these giants live up to their name. In northern Indiana where this photograph was taken, Heliantus giganteus is most often encountered in Adrian muck soil at the margin between a mesic prairie and a marsh. This species can be easily recognized by its reddish stems.
Helianthus giganteus is always found in the company of other tall plants in an herbaceous thicket; probably they would not be able to stand without the support of their neighbors. Like most sunflowers, they bloom in late summer, and this species is especially popular with goldfinches. Possibly because of it's height and tall associates, it's difficult to capture in a small photograph; we hope to replace this photograph with a better one in the near future.
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