There are several native species that have potential as cover crops. During the 2004 growing season, we established five native species as cover crops at two separate sites, the Horticulture Research Station and the Western Research Farm, and we have been measuring cover crop and prairie species establishment, biomass production, and weed suppression annually since then. The objective of our study was to develop a better understanding of how cover plants are affecting weed and prairie species establishment.
Iowa State University
Wilsey, Brian J. and Blong, Andrea, "Native Cover Crops: Effects on Weed Invasion and Prairie Establishment" (2007). Iowa State Research Farm Progress Reports. 873.