The book falls short to its title.
Yes, it's interesting, it has nice illustrations and brushes on a meaning and a lore. However, it does so in a manner that to me, at times seems chaotic. For example it gives a meaning of a flower at the beginning after which lapses into a page long myths that suggest totally different meaning, before offering a short paragraph of a myth that supports the one given at the begining.
Also some quotes, at least to me, seem a little too random.
It's enjoyable to read and gives nice glimpses into flower history, but if you are here only to learn language of flowers, I would search some other titles.