Where should the buttonhole go? The buttonhole should be placed on the man's left lapel, just above the heart and horizontally centred. The flowers should rest on or just below the widest part of the lapel. Position the stem so that it's parallel to the edge of the lapel.
Which way do you wear a buttonhole?
How Do You Wear It? Male buttonholes should always be worn on the left-hand side. If there is an actual button hole in the material, the stem of the flower is threaded through the left lapel of the suit jacket and secured with a pin.
Do men wear button holes up or down?
The men's buttonholes are always worn stem-down with the pin (if one is used) behind the lapel out of sight.