I would beware the word combination "marijuanna" and "botany".
A botanist would not say marijuanna, at not in a book title. It's cannabis.
very much agree..
but I pulled out his german book of this same book ( only written in german ) ( also not sure what got published first )
and the title says.. obviously direct translation sometimes is very sketchy, but it says: cannabis. botany, extension, more of growing. maybe he thought more people said marijuana in the US???
I don't know though. who the hell does. the information in the book though I thought was good. alot more "serious" and "growing up" from your average pot book..
did I say pot....
of all pot books, I think this one gets the most thumbs up from people