I am designing a screen of narrow shrubs for a space between a sunken stairwell and an existing paver walkway. The width of the area in question is 2.5' with a desired plant height of 5'.
As such, I've narrowed my search to one of Dee Runk or Green Tower Boxwoods; both of which I expect to grow 18"-24" wide.
With this proximity to the sidewalk, am I risking disruption/buckling of the existing paver walkway with the roots of these plants? Any ideas what a safe minimum distance would be?