By Marjorie Peronto, Extension 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/. The bright yellows of forsythia shrubs (Forsythia x intermedia) are a hallmark of spring. They take many forms, from the wild and woolly hedges that haven’t been