Agriculture & Food Laboratory

afl.uoguelph.ca/

Growing Hops in Ontario: Ministry of Agriculture, Food and Rural Affairs
http://www.omafra.gov.on.ca/english/crops/hort/hops.html

Growing Hops: Michigan State University
http://msue.anr.msu.edu/uploads/resources/pdfs/Growing_Hops_(E3210).pdf

Hops: Crops and soils programs: The University of Vermont
http://www.uvm.edu/extension/cropsoil/hops