Standing in front of his locker, McCutchen placed his old Pirates cap atop his head and said it felt like "shaving out the inside of a watermelon and putting it on your head and putting a hat on top of it, and then taking that watermelon off."
McCutchen released a video on YouTube on Wednesday, an off-day for the Pirates, to unveil the news.
"It was just time. I've had [dreadlocks] for such a long time now, and they were starting to get a bit long," McCutchen told reporters. "I made up my mind: After I get married and we get settled, it was something I was going to do. So I was looking forward to it."
Ten strands of his former dreadlocks will be auctioned on MLB.com. All the proceeds will benefit Pirates Charities.
"It is a bit strange, but hey, I guess there could be some value in it and doing it for a great cause," McCutchen said when asked about the thought of someone else owning his hair. "I'm happy they're doing it. It'll be great.
"It's going to be good. I can be like everybody else -- like all the rest of the guys on the team -- and get a new haircut every two weeks."
This time around, McCutchen told his barber to give him "whatever looks good, basically," and the barber proposed a "South of France"-style cut.
"Well, it's a cool name," McCutchen said. "I guess I'll get that."
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.