How to's of trimming a PomPom Bush
Does anyone know how much you can trim off a PomPom bush? I know this is not the name of the bush, but the heads of the bush look like pompoms. Mine is well over 15 years old and the heads are very large. I don't want to kill it by cutting off too much, but there are about 10-15 inches of dead branches before you get the green tops. Thank you for any info you can give me.