Japanese Maple's trunk diameter
I would like to plant an Emperor 1 or Sango-Kaku behind my pool in the very corner of the yard as a focal point behind a waterfall. I was hoping you could tell me approximately what the trunk circumferance would be when they are full grown to be sure it has adequate room. Also are the roots invasive? Will they be aggressive and ruin pool pipes? Thank you so much!! PS, we are in the Sacramento Valley, so it gets pretty darn toasty out here! The tree will be in FULL SUN all day.