
Think hard about it — scotch pine is on the hazard list in central Indiana. Extremely common across central Indiana as a legacy planting — abandoned Christmas tree farms, 1970s-90s subdivision screens, and farm windbreaks — and now steadily disappearing from the landscape to pine wilt. You will find whole planted rows dying one at a time straight down the line.
While healthy it is modest — short paired needles and small cones, plus flaky orange-brown bark that peels in plates off the upper trunk. The debris that actually matters is what comes off the removal: infested wood must be chipped, burned, or debarked rather than stacked, because a stacked log keeps producing beetles that infect the next pine down the row.
Wide-spreading and reasonably deep on good ground, but shallow and plate-like in the compacted clay it is usually planted in, which is part of why old ones lean. Roots are not an infrastructure problem at all — the issue is that a pine-wilt-killed tree's roots decay quickly, so anchorage is gone within a season or two of death even though the tree is still standing.