Hi, Joann. Great to see you here.
I've heard that you can use an electric hedge clipper to prune Knockouts, but I only have one, so I just prune it back to a manageable size by hand, the same way I'd prune any shrub.
Actually, "by hand" sounds as if I have an Edward Scissorhands hand, so I guess I mean "with a non-electric pruning tool."
