Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . Shweinitz’s sunflower grows in only a few places in north and south Carolina. Since 1991 it has been on the federal endangered species list; it seems to require a fairly regular fire regime in order to persist. It has an unusual root system for a sunflower, fleshy starchy structures like a sweet potato’s which provide it with the stored carbohydrates needed to resprout vigorously after fires or mowing – now it is