Vicia villosa, known as the hairy vetch, fodder vetch or winter vetch, is a plant native to some of Disadvantages of hairy vetch in production agriculture are related to the crop having a portion of hard seed and its tendency to shatter seed early. Hairy Vetch. D.J. Undersander1, N.J. Ehlke2, A.R. Kaminski1, J.D. Doll1, K.A. Kelling1. 1Departments of Agronomy and Soil Science, College of Agricultural and.