Lawn care in Hillsboro, built around Hillsboro's ground.

Hillsboro has grown fast, and a lot of that growth shows up in the lawns: neighborhoods near Orenco Station and the tech corridor around Intel's campus are built on lots where heavy construction equipment compacted the subsoil long before a builder ever rolled sod on top. The grass on these lawns often looks fine the first year or two, then starts thinning as roots hit compacted ground a few inches down that they can't push through.

For newer Hillsboro properties, aeration usually matters even more than in older neighborhoods — it's less about relieving years of foot-traffic compaction and more about undoing what heavy equipment did to the ground before the house was even finished. Older pockets of Hillsboro, further from the newest development, behave more like typical established west-side lawns with the same clay-and-moss pattern common across the county.