Cleaning Procedure from Illinois Department of Natural Resources - Mason State Nursery for Zizia aurea

Golden Alexander seed is harvested green and stored in bags to dry. This prevents a loss of seed when matured in the field. Once it is dry, run the seed through the Dybvig and then over the Clipper with a top screen of 8 and a bottom screen of 1/20. This seed can be cleaned to 87% purity with 10,526 seeds per ounce.