Tallgrass Prairie Center cleaning process for Doellingeria umbellata

If hand clipped, run dried material through a 1/4 in mesh to thresh seed from stalks. Use a brush machine (medium bristles, low vacuum) to remove pappus. May need two rounds of brushing. Winnow with a box fan to separate seed from most of the pappus and chaff. Airscreen 2-3 times, then indent to remove broken bits of stems.