Certified Arborist Tree Health Assessments in Westchester County

About Our Tree Health Assessments & Disease Diagnosis Service in Westchester

Not every troubled tree needs to come down. Our certified arborists perform on-site evaluations to diagnose disease, pest infestation, and structural risk — including regional threats like emerald ash borer, oak wilt, spotted lanternfly, and beech leaf disease. You get a clear treatment-or-removal recommendation backed by Tree Risk Assessment Qualification (TRAQ) methodology.

What's Included in Every Tree Health Assessments & Disease Diagnosis Job

• On-site disease and pest diagnosis
• Structural risk assessment (TRAQ)
• Emerald ash borer and regional pest evaluation
• Treatment vs. removal recommendations
• Certified arborist credential

Diagnose Before You Decide

Removing a valuable mature tree is a big call. Our certified arborist assessment gives you the information to make the right one — often, treatment or monitoring saves a tree that a general tree service would tell you to remove.

Regional Threats We Look For

• Emerald ash borer (EAB) — D-shaped exit holes, upper-canopy dieback in ash
• Oak wilt — rapid crown wilt in oaks; contagious via vascular system
• Spotted lanternfly — nymphs and adults, especially on tree of heaven and hardwoods
• Beech leaf disease — banding between leaf veins, defoliation
• Root rot (Armillaria) — mushroom clusters at the base, canopy decline

Structural Assessment

Not all problems are pests. We use TRAQ methodology to evaluate:

• Trunk cracks, cavities, and decay
• Root flare and soil heave
• Co-dominant stems and weak unions
• Lean angle and change over time
• Proximity to structures and lines

The Report

You get a written report with observations, risk rating, and specific recommendations — treatment, monitoring, structural support (cabling and bracing), or removal. No pressure, no upsell.

Related guides: common tree diseases in Westchester, emerald ash borer signs, when to call a certified arborist.

Coverage Area

Our certified arborists assess trees across all of Westchester County and the surrounding 25-mile radius, including Scarsdale, Bronxville, Larchmont, New Rochelle, Chappaqua, and White Plains.