Silphium terebinthinaceum (Prairie Dock)

This perennial plant is a classic of the tallgrass prairie. Frequently confused with sunflowers, its showy yellow flowers can tower over shorter plants.  Interestingly enough, its leaves in the hot day's sun are substantially cooler than the surrounding air because it is constantly pulling cool water from deep in the earth and evaporating it through its leaves. Sun Exposure Prairie/Savanna Soil Conditions Wet Mesic, Mesic, Dry Mesic, Dry Height: 8' Flower Color yellow Flower Time June-August   Frequently Asked Questions Why Purchase From Natural Communities Native Plants? What Native Plants Should I Buy? What Can I Expect: Shipping/Free Local Pick Up? What Are Your Plant Sizes?  Why Plant Natives? Second Photo By: Midwest Groundcovers