– “For the Love of Hops.” Disclaimer: I wrote this book.
– ScottJanish.com. You’ll find a link to buy his book, “The New IPA,” here as well as a variety of tools and his blog. He’s a bit busy these days, brewing beer at Sapwood Cellars, but when he makes time to update his blog the deep dives are worth your time.
– Hoplist.com. Julian Healey has compiled a comprehensive list of varieties, many of which, to be honest, you have no chance of finding. Search the list, or do the right thing and buy the book.
– Hop Growers of America. Looking for statistics? Download their annual report.
– IHGC list of international hop varieties. 314 entries (312 actual hop varieties and two collective terms)
– HVG. Hopfenverwertungsgenossenschaft e.G represents more than a thousand German hop growers.
– Gesellschaft für Hopfenforschung (GFH) Links to still many more German hop organizations, plus other information.
– Czech Hops. The information you would expect, plus a downloadable magazine. Bohemia Hop is also a good source for news and crop reports.
– British Hop Association. “Home of British Hops.”