Top 10 Public-Space Arborist Mistakes (and How Councils Can Avoid Them)
Public Tree Management Is an Asset Stewardship Responsibility
Trees in public spaces provide significant environmental, social, and community value. They also carry inherent risk — particularly in high-use areas such as footpaths, parks, road corridors, and civic precincts.
Most arborist-related incidents involving councils do not stem from neglect. They result from process gaps, inconsistent assessment, or undocumented decisions.
This guide outlines the most common mistakes in public-space tree management — and how councils can avoid them.
- Treating Tree Risk as a Reactive Issue
Responding only after storms or complaints increases exposure.
Risk develops gradually and must be managed proactively.
Avoidance: Implement cyclical assessment programs aligned to site use and tree age.
- Relying on Visual Inspections Alone
Visual checks have limits, particularly for:
- internal decay
- root plate instability
- historic pruning damage
Avoidance: Engage qualified arborists for structured assessments using recognised methodologies.
- Inconsistent Assessment Standards
Using different contractors, criteria, or thresholds weakens defensibility.
Avoidance: Apply consistent assessment frameworks across all public assets.
- Inadequate Documentation
Verbal decisions or undocumented risk acceptance create exposure.
Avoidance: Maintain written risk assessments, recommendations, and follow-up actions.
- Delayed Action on Known Risks
Identifying risk without prioritisation can be as problematic as no assessment at all.
Avoidance: Implement risk-based prioritisation and scheduling.
- Over-Reliance on Removal
Unnecessary removals can reduce canopy cover and public confidence.
Avoidance: Focus on targeted pruning, mitigation, and monitoring where appropriate.
- Underestimating Root Zone Impacts
Construction, drainage changes, and compaction significantly affect stability.
Avoidance: Include root zone assessment in all planning and maintenance decisions.
- Using Non-Specialist Contractors
Tree work in public spaces is safety-critical.
Avoidance: Engage qualified arborists with appropriate insurance and accreditation.
- Failing to Align with Compliance Requirements
Public assets require alignment with:
- Australian Standards
- local government policies
- insurer expectations
Avoidance: Ensure arborist reporting supports compliance and audit requirements.
- Treating Tree Management as Maintenance, Not Risk Management
Tree care is not just a maintenance function — it is a risk governance activity.
A More Defensible Approach
Effective councils:
- plan assessments strategically
- document decisions thoroughly
- manage risk proportionally
- retain healthy trees responsibly
For councils and government bodies, a professional arborist assessment provides clarity, defensibility, and long-term asset protection.
