Hazard tree assessment in Denver, CO

A hazard tree assessment is the right call when you are seeing warning signs — recent lean, fungal conks at the base, large dead branches, soil heaving, recent neighborhood failures during a storm — but you are not sure if removal is necessary. A 30-60 minute on-site evaluation by an ISA-certified arborist produces a written report grading the tree's risk and recommending action.

Denver tree services run on a different climate than most US markets. The semi-arid Front Range — averaging 14-16 inches of precipitation per year, with hot dry summers and cold winters — produces a different set of stress patterns than humid Eastern markets. Drought stress is chronic across most species. The dominant urban canopy mix — honeylocust, Norway maple, Norway spruce, blue spruce, ash (heavy EAB devastation), Siberian elm, cottonwood, and hackberry — was shaped by hardiness requirements and the city's history of replanting after Dutch elm disease in the mid-20th century. EAB (emerald ash borer) was confirmed in Boulder County in 2013 and has since spread through the Denver metro, killing nearly all unmedicated ash.