What does it mean if you don't trim a short growth of beard? Will it be a short beard?

If you do not trim a short growth of beard, it will continue to grow longer and eventually become a longer beard. The length of the beard will depend on your genetics and how long you allow it to grow without trimming. So, it will not necessarily remain a short beard if left untrimmed.

If you don't trim a short growth of beard, it will continue to grow and become a longer beard. The length of the beard will depend on how quickly your hair grows, but it will generally continue to grow until you trim it.