Yes, the book is written in Japanese.
The pages of the half of the book are explanation about the growing.
Therefore, it is a book for the Japanese essentially.
However, I enjoy CPN to be able to read it hardly. (My English skill doesn't
permit reading it.) It is because there are some photographs in it.
There are about 300 photographs(80 pages) in The new Japanese cp book.
I expect that you will enjoy it.
Kind regards from Japan
Isao
P.S.Attention, the book aren't yet published. The scheduling day is the 14th.