Union County, NJ Tree Protection: Heritage & Protected Trees (2026)

Heritage and Specimen tree programs across Union County provide enhanced protection beyond standard tree removal ordinances. The NJ Big Tree Registry, maintained by Rutgers NJ Agricultural Experiment Station and NJ DEP Forest Service, catalogs the largest documented specimens of each native species; several Union County trees appear on the registry including notable oaks and tulip poplars in Watchung Reservation and older residential communities like Summit and Westfield. Westfield Code Chapter 16.04 designates Specimen trees as those 24+ inches DBH with enhanced protection: removal requires Mayor and Council approval (not just administrative permit), and construction within the tree protection zone (typically 1 ft radius per 1 inch DBH) requires arborist oversight and root protection barriers. Summit Code Chapter 203 similarly identifies Specimen trees with 24-inch DBH threshold. Elizabeth Chapter 12.16 extends enhanced protection to historic landmark trees on city property. Cranford Chapter 206 designates Heritage Trees through Shade Tree Commission with nominations accepted from residents. Union County Parks Department manages heritage specimens in county parks including Echo Lake Park's notable English elm survivors and Warinanco's century oaks. Damage from construction typically triggers appraised-value penalties using the ISA Guide for Plant Appraisal; large specimens can be appraised at $10,000-$50,000 or more. Emergency removal permitted only for imminent safety threats with arborist documentation.