Posted: 06/10/2014 at 23:35
Mike, I'm sorry but I disagree and re-state that conifers have shallow roots systems. The Encyclopedia Brittanica agrees: "Roots gather water and mineral nutrients from the soil and anchor and support the above-ground portions. Most conifers have rather shallow, if wide-spreading, root systems, making the trunks highly susceptible to wind and surface disturbance.":
It doesn't mean they can't damage foundations of course.