Tree Health Assessments in Dunedin

A tree can look perfectly healthy from the ground while harbouring serious decay, disease, or structural weakness inside. Professional tree health assessments by qualified arborists give Dunedin property owners a clear, evidence-based picture of their trees' condition — and what, if anything, needs to be done.

What a Tree Health Assessment Covers

Our arborists assess each tree systematically, examining:

Crown condition — leaf density, colour, dieback, and canopy structure
Trunk and bark — cracks, cavities, fungal fruiting bodies, and signs of decay
Root zone — root collar health, soil condition, signs of girdling or waterlogging
Structural integrity — co-dominant stems, included bark, weak branch attachments
Pest and disease indicators — insect damage, bacterial lesions, cankers, and infections

When Do You Need a Tree Health Assessment?

Tree health assessments are recommended in a range of situations:

Before purchasing a property — to understand the condition and liability of existing trees
After storm damage or significant weather events
When a tree shows signs of decline (sparse foliage, dead branches, yellowing leaves)
Before or after construction works near trees
As part of a resource consent or building consent process
For insurance purposes or legal disputes involving trees
As routine maintenance on large, mature, or significant trees

Dunedin's Tree Health Challenges

Dunedin's climate and soil conditions create specific challenges for tree health. Clay-heavy soils in many hill suburbs cause waterlogging and root stress, particularly after wet winters. Coastal exposure on the Peninsula and in St Clair and St Kilda increases fungal disease pressure. Rapid weather changes — from frost to warmth in days — stress trees that aren't well-suited to local conditions.

Common problems we identify in Dunedin include Phytophthora root rot in poorly drained sites, Armillaria (honey fungus) in older gardens, possum damage on native species, and storm-related structural failures in large exotics like oaks, pines, and macrocarpa.

What You Receive

After the assessment, we provide a clear verbal briefing on site and, where required, a written report detailing findings, recommended actions, and priority ratings. Written reports are available for consent processes, insurance claims, and property transactions.