Think of the possibilities!

Reminds me of all the obscure codes from the Series of Unfortunate Events. "Varied Flower Dialogue" maybe.

I've seen someone actually figure out the arrangements for that message

There's heaps of flower dictionaries, you so could create a long intricate message

sometimes you need older meanings, since some flower meaning have been lightened up now. Like yellow roses and jealousy, that took me a long time to find, I was looking because someone had meantioned those in relation to Mary from Ib

Put a tomatoe in the bouquet too, stab it on a wood stick or sth, "Bring THAT tomatoe"