Trees

This Can’t Be Good

This is my beloved mulberry tree. Well, half beloved. When she drops berries all over my yard and stairs for two or three weeks, we’re not the best of friends. But now, I’m very worried. What the hell is this? Have you ever seen a huge branch just start to split like this? Do you think it was struck by lightening? What do you think caused this? Do I have to get the whole branch removed?