Growth on rose bush

Asked July 12, 2016, 7:31 PM EDT

One of my rose bushes has many of these "bulbs" growing on several branches. Should I prune these out of my roses? Will they damage them?

Hubbard County Minnesota

1 Response

I know it can be difficult to take a good picture and the one provided is not sharply enough focused on the growths in question. Galls can be pruned out so can fungal knots if that is what is in the picture.