Station GDD50 Ithaca / University of Wisconsin-Madison/Cooperative Extension / Station GDD50 Albany / University of Illinois/Urbana-Champaign / Ohio State University / EAB Michigan State University / Michigan State University / /
Michigan State University / University of Illinois / Cornell / Extension Diagnostic Lab / New York State Arborists-ISA Chapter / USDA Forest Service / University of Wisconsin / The Ohio State University / Cornell University / /
Person
Donald Hilliker / Carmine Serpe / Amy Stone / Joseph Boggs / Rebecca Hargrave / Cliff Sadof (Purdue) / Dave Smitley / Chris Williamson / Joseph Dinardo / Dan Herms / Ash Trees / Mark Whitmore / Louis Sachetti / Deb McCullough / Phil Nixon / Fragrant Viburnum / Kent Loeffler / David Cappaert / /
Silver Maple Westchester County / Wisconsin / New Brunswick / Suffolk County / Phenology Rockland County / White Poplar Tompkins County / Illinois / Ext. Chenango County / /