Plants Speak with Us

On my walk home the other evening I noticed this notice outside a florist near Ebisu. It made me stop, take this picture, and think about what it said.
I tend to think that flowers and plants share aspects of Mind, and that we should try to talk with them. The various plants at home have names.
There was a German experimental psychologist called Gustav Theodor Fechner who wrote a book called Nanna in 1848 (translates roughly as soul-life of plants). Fechner posited that plants contain a central nervous system like us and that we should talk with plants.

In 1970, George Milstein released an album called 'Music to Grow Plants' (ESC Records #121). It has a wonderful cover.

It seems to me that these examples are intimations of our archaic links with the natural domain before the categorical imperatives of science and taxonomy or the rigidly psychosis identifying characteristics of modern psychology.
Not to mention the profound historical relationships we have made through plants with a panoply of sacred visions and imaginings. Entheogen is the term used to describe the use of plants in sacred contexts.