During the 2015 growing season, the major pest challenges we encountered at the hopyard at the Borderview Research Farm in Alburgh, Vermont were potato leafhopper (Empoasca fabae), and hop downy mildew (Pseudoperonospora humuli), as well as a few secondary plant diseases.
Vermont, University of Vermont
Darby, Heather and Calderwood, Lily, "Hop Pest Scouting Report" (2015). Northwest Crops & Soils Program. 129.