Bulletin #2244, Maine Forage Facts: Sunn Hemp (PDF) By Jaime Garzon, Assistant Extension Professor and Forage Educator, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Introduction Sunn hemp plants in the blooming period. Sunn hemp (Crotalaria juncea L.) is a fast-growing warm-season