Rainbow... Why Are You Eating My Flowers?

Fluttershy has only one question.

The sun is shining, the birds are singing. When Fluttershy stepped out of her cottage it was a perfect summer day. Or at least it would have been if she hadn't come across a certain rainbow-maned mare in her yard. One thing she wasn't expecting to find herself asking today was the odd question...

Why is Rainbow Dash eating her flowers?