Flowerese

Flowerese is the unheard language of flowers. Peppy villagers mention this language while talking to the player sometimes, stating that they can hear the flowers when they water them and that it took such a long time to master Flowerese. The player cannot activate the language Flowerese using the phone in the attic, so it may just be a made up idea created by the peppy villagers.

It might be a reference to Shel Silverstein's poem "I Once Spoke The Language of Flowers".