I've been looking around to see if this item made it live. As detailed on wowpedia:
http://wow.gamepedia.com/Mysterious_Flower
There's supposed to be a flower in every zone, and if you interact with all of them it unlocks a toy (no longer visible in the toybox, however some toys aren't so unsure if it's still available).
I found one flower in Talador (37.91) and the associated "quests" from the flowers are in game (you can check if they're flagged) but I can't find the rest. The Talador flower was in a different location than wowpedia had so it's possible they've been moved.
http://www.wowhead.com/object=227012...lower#comments
Anyone seen any flowers apart from the Talador one?