Each of these has its own page, because each one has its own tree problem. They are not the same page with the city name swapped.
Aurora
Home city, and the one with the biggest ash problem in the state. Emerald ash borer was confirmed here in September 2025, and roughly 110,000 ash trees stand in Aurora with about 90% of them on private property — which means they are the homeowner’s call, not the city’s.
Aurora tree service →
Denver
The oldest canopy in the metro and the widest range of it — century-old street trees in Park Hill and Washington Park, and twenty-year-old plantings out in Green Valley Ranch. EAB was confirmed in Denver in July 2025.
Denver tree service →
Centennial
Housing that mostly went up between the 1970s and the 1990s, which puts an enormous number of trees into structural maturity within the same decade. Large lots and big canopies make pruning cycles matter more here than almost anywhere.
Centennial tree service →
Parker
Emerald ash borer reached Douglas County here in August 2026 — the first confirmed find in the county, in a residential front-yard ash. That changes the ash conversation for everyone south of Arapahoe Road.
Parker tree service →
Castle Rock
A young canopy by metro standards — most of the town went up in the early 2000s. The trees are at the age where structural pruning is cheap and removals are rare. The Town also asks residents to use CDA-certified applicators, which Derek is.
Castle Rock tree service →
Highlands Ranch
A master-planned community built from 1981 onward, which means tens of thousands of trees planted within a few years of each other. They mature together, they fail together, and they are almost all on HOA-governed lots.
Highlands Ranch tree service →
Englewood
An older, denser street grid with an unusually high ash count — the city estimates around 20,000. Englewood has also run a cost-share program to help residents treat or remove ash, which is worth checking before you pay full price.
Englewood tree service →
Littleton
Where emerald ash borer first turned up in Arapahoe County, back in June 2023. That is three growing seasons of spread already in the ground, which makes Littleton ash the most time-sensitive in the metro.
Littleton tree service →
Greenwood Village
Large lots, old trees and some of the biggest specimen canopies in the metro. The work here skews toward preservation — cabling, deep-root feeding and careful reduction on trees that would cost a fortune to replace and a lifetime to regrow.
Greenwood Village tree service →