The Silphiums may not flower for you the first year as they take a couple of years to mature. Yellow ray and disc florets are up to 5" in diameter.

Environment:  Prairie  Savanna  Woodland  Wet  Wet Mesic  Mesic  Dry Mesic  Dry  Butterfly/Caterpillar

Bloom Period:  April  May  June  July  August  September  October