Just another couple of questions and I'll move on, honest. Do I treat this Pieris as a shrub or tree? Can I expect the base growth to thin out and for it to resemble more of a tree shape? Thanrose mentioned that it might be an 'ornamental'. I'm not sure what that means. Finally I noticed that under another posting for 'mountain fire Pieris' that the plant should be treated as highly toxic and danegerous. Can I expect my variety to also be toxic?