DH and I moved into a home last summer that had a poorly-pruned Japanese maple ( acer palmatum) in front. It looked like a q-tip. This year it produced suckers along the lower trunk. My sister (an Ag major, so in theory she should know) suggested that I top the tree. She said it wouldn't grow any larger, but would get fuller.
Does this sound reasonable? Or if i try this would I be making things worse?