Project Description

Barnes Arboretum Tree Protection

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The Barnes Arboretum was recently acquired by St Joseph’s University and an integrated plan to better connect the two campuses was created to improve accessibility. This included the construction of a new sidewalk pattern that could adversely impact the critical root zones of several specimen quality heritage trees on the arboretum’s campus. We were hired to design and implement a tree protection system that involved tree protection trenching, root pruning, tree protection fencing and post construction rehabilitation.


Designed a tree protection system that protected the Critical Root Zone (CRZ) and allowed for construction to take place

Utilized an AirKnife to excavate root systems without damaging the roots

Pruned the root system and installed deep root barriers to prevent long term damage to the sidewalks

Installed fencing in the Tree Protection Zone (TPZ) to ANSI A300 BMP Standards

Continuous monitoring of site throughout construction

Post construction fence removal

Post construction care consisted of root zone improvements with aeration and a Biochar/Compost soil ammendment


Brandywine Urban Forest are a team of consulting arborists, and green industry professionals who are experienced in working with municipal, commercial and residential clients

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