A Message of Passion Or Just A Message?

As early as the 1600's the language of flowers was developing in the poetry of Persia and in Constantinople.
Charles II introduced the Persian poetry to Europe and Lady Mary Wortley Montagu brought the flower language from Turkey to England in 1716. In France it became the Book Le Language des Fleurs with 800 floral meanings. Lovers began exchanging messages with bouquets or a single stem.
In this version, a yellow iris meant passion. In Vanessa Diffenbaugh's recently read, The Language of Flowers, Iris (no color given) means message.

So my blossoms of yellow Iris could mean "a message of passion". Right?

(The meaning of that lone day lily at the edge of the picture means coquetry. Just what I am being.)