Working with what's already there.
A large share of Dunedin's housing stock is established — villas, bungalows and post-war homes with gardens that have had thirty, fifty, sometimes a hundred years to mature. That changes the brief from most fresh-planting work: the question usually isn't which species to choose from scratch, it's what to keep, what's outlived its usefulness, and how a mature tree canopy or an overgrown hedge line should shape a new planting plan rather than be cleared to make way for one.
Dunedin's weather is a genuinely different starting condition too — cool, maritime and consistently wetter than most of the country, with shade and exposure both varying sharply by aspect. A design that assumes a warmer, drier climate's establishment timeline or species tolerance will underperform here, particularly through the cooler, wetter months when a lot of establishment work actually happens.
01 · What an established Dunedin garden brings to the brief
Four things to assess before adding a single new plant.
What's actually worth keeping
Mature trees, established hedging and old structural planting often have real value — shade, shelter, character — that a fresh planting plan should work around rather than clear by default.
Soil that's been shaped by decades of use
Long-worked garden soil behaves differently to a new-build's disturbed topsoil — sometimes better structured, sometimes compacted or depleted in specific beds — and is worth assessing on its own terms rather than assumed.
Shelter already created by the built environment
Established boundary fencing, neighbouring buildings and mature trees often already provide real wind shelter that a newer property wouldn't have — worth mapping before assuming exposure.
A genuinely cool, wet climate baseline
Cool maritime conditions with shade and exposure varying markedly by aspect mean establishment planning runs on a different clock here than in a warmer, drier city.
02 · Renovation vs. fresh planting
Two different starting points for a Dunedin garden.
Renovating an established garden
Typical siteOlder villa or bungalow, existing mature planting
Design taskAssess and edit, not start from zero
ConsiderRoot protection for anything worth keeping during nearby works
Planting a newer or cleared section
Typical siteNew build, or a garden cleared back to soil
Design taskBuild shelter and structure before relying on it
ConsiderEstablishment takes longer without existing wind protection
03 · Cost drivers on a Dunedin site
Editing an established garden costs differently to starting fresh.
04 · Planning example
An established Māori Hill villa garden.
A 1920s villa garden with an overgrown side border
The front and rear gardens are largely workable, but a side border has become dominated by an overgrown hedge that's blocking light to a north-facing bed. Rather than a full-garden redesign, the brief is deliberately an edit: the hedge is reduced and partly replaced, a mature specimen tree near the house is retained and root-protected, and the newly sun-exposed bed is replanted with species suited to that aspect rather than the shade planting that suited the old conditions. Because the surrounding soil has been a garden bed for decades, it needs less structural preparation than a new-build equivalent — the main cost sits in removal and access, not soil work.
05 · Before redesigning an established Dunedin garden
Decide what stays before deciding what's new.
- Walk the existing garden and decide what's genuinely worth keeping before planning around a blank-slate assumption.
- Have soil assessed bed by bed if any area has consistently underperformed, rather than treating the whole garden as one condition.
- Confirm what shelter the existing boundary, buildings and mature planting already provide before adding new wind protection.
- Plan establishment watering and timing around Dunedin's actual cool, wet-season pattern, not a generic national planting calendar.
Sources & methodology
Designed to show its working.
Species performance varies by microclimate even within one Dunedin property. This page provides general planning structure; aspect, frost and salt exposure should be assessed on site before a final species list is set.