I have not only a suggestion, but a favor to ask. It is this: sit back, read, enjoy, and savor the poem. Read it a second time: Enjoy the words, the cadence of the lines, the images it conjures up in your mind. Read the poem without wondering "what to do with it." Don't immediately strain your brain for an exercise. You can find exercises and poetry starters in a crowd of books, articles, on poet's websites, etc. I'm fairly certain that if you just breathe in the pleasure of the poem, your students will, too.

Encourage students to think like a poet:

Writing poems about flowers? Take a walk outside. Observe. Really look at "a bunch of flowers," — then compare them to something else, conjure up a new image, a fresh metaphor, for instance:

A party of pansies
A meeting of marigolds
A parade of daisies

Think about the exact right word.
Think of sound and sense; observe and use fresh images.
Play with metaphors (the sky is a blue sheet ... ) and personification (waving in the wind) and simile (the sky is like a blue sheet, waving in the wind).