Men once had buttonholes. Hard to believe, but they actually did, and what is more they really put things in these buttonholes – flowers for preference. Which flowers? Well, the gardenia was once called the “opera flower” because of being worn by gentlemen in their button holes to the opera. Other gentlemen chose other buttonholes: carnations, lily of the Valley, possibly a geranium (if they were Charles Dickens whose favorite flower it was) or a rose.