Ideas about how to add to this - there are many gods that could want the flowers. As they are magical, Lucinda could get involved. Also Xeen, possibly Katia as they are of outstanding beauty and yet of the natural world - and of course Corath could always want to get involved. After all, with this many goddesses wanting something, there's DEFINITELY room for mayhem ....
This could involve a lot of rumor, at least to start, chasing down leads and trying to find where they grow. And no one said it has to grow aboveground ....