This guide had a definite botanical emphasis in regards to lavender. About 75% of the book is devoted to detailed descriptions of the many varieties of lavender. If you were an experienced grower looking for information on a particular variety, the detail and photos would be helpful. I confess, I skimmed this part. I did find the first chapters on General Cultivation and Propagation helpful. Did you know the stem of a lavender plant is called a peduncle?? Yep, more than I need to know in this tome. I'm glad I got it through interlibrary loan.