Zachary didn't find this book on the shelves of his local public library

Link to April 23 Wisconsin State Journal article, "Police find 628 pot plants in house; 2 men charged."

Excerpt:  During a search of Czerkas' former bedroom in Cross Plains on April 12, police found baggies of suspected marijuana and book title "Grow Great Marijuana."

But he could have requested it via interlibrary loan.

Side note:  Zachary is a 2009 graduate of Middleton High School -- as is Retiring Guy's younger son.  (And that, he assumes, is the only connection.)