What fun! Anthropomorphism is one of my favorite things! How about these:

Tipsy as a tulip
Dauntless as a daffodil
Evasive as a morel (a mushroom, but it only comes up in the spring)
Rowdy as a black-eyed susan
Guileless as a dandelion
Gregarious as an apple blossom

(Aenigma sez "tiptoe" as a tulip)