
It wants moist, well-drained ground and will not tolerate roots sitting wet through winter, which is the most common way one is lost here. The roots themselves pose no threat to drives, walks, or sewer laterals — the damage runs the other direction, with root rot in saturated clay, made worse by soil or mulch piled over the root flare at planting.
30-50 ft tall by only 15-20 ft wide with slow growth (Morton) — much narrower than a blue spruce, which is why it fits lots a spruce would outgrow. Morton reports no serious pest or disease problems, so a well-drained site produces a long-term tree; removal is a mid-bracket conifer job, and the narrow spread often means it can be felled in one piece where there is room.