Garden beds are the most visible — and most expensive — soft asset on most commercial sites. When presentation slips, the first instinct is often to rip and replace. Sometimes that's right. Often it's overspend. This article walks through the decision framework Element Queensland uses with commercial clients across Brisbane, Moreton Bay and the Sunshine Coast.
Five questions to ask before deciding
- What percentage of plants are still healthy? Below 40% retention, replacement usually wins.
- Is the soil still functioning? Hydrophobic, compacted or contaminated soil pushes you toward replacement.
- Does the original design still suit the site? Changes in shade, traffic or branding can make the design obsolete regardless of plant health.
- What's the irrigation condition? A renovation is the cheapest opportunity to upgrade irrigation.
- What's the budget cycle? Phased renovation suits opex budgets; replacement suits capex programs.
Decision matrix
| Indicator | Renovate | Replace |
|---|---|---|
| Healthy plant retention | > 50% | < 40% |
| Soil condition | Functional, amendable | Compacted / hydrophobic / contaminated |
| Design suitability | Still appropriate | Obsolete or off-brand |
| Irrigation | Working with minor repairs | Failed or absent |
| Budget | Opex / phased | Capex / one-off |
| Indicative cost (per m²) | $45 – $90 | $120 – $260 |
What renovation actually involves
Selective removal
Pull weak, dead or off-design plants. Retain healthy structural specimens.
Soil amendment
Aerate, add compost, gypsum and slow-release fertiliser. Address pH and drainage issues.
Replant & mulch
Infill with appropriate stock, top up to 75–100mm of organic mulch.
What replacement actually involves
- Strip-out of all existing plants and mulch
- Removal or remediation of existing soil to 300mm depth
- Edging and hardscape adjustments
- New irrigation design and install
- Bulk soil import (premium garden mix)
- Full new planting palette to specification
- Mulching, fertilising and 12-week establishment care
Total-cost-of-ownership view
A renovation at $70/m² with a 4–5 year horizon often delivers similar lifetime value to a $200/m² replacement with a 10-year horizon — provided the underlying soil and irrigation are still serviceable. Where they're not, replacement avoids throwing good money after bad.
Quick lifetime cost example (per 100m² bed)
Renovate at $70/m² × 2 cycles over 10 years = $14,000.
Replace at $200/m² once over 10 years = $20,000.
Replacement wins only when soil/irrigation upgrades are essential — otherwise renovation delivers ~30% saving.
Common pitfalls and quick fixes
Renovating without addressing soil — the new plants fail in the same conditions that killed the old ones.
Always test and amend soil during renovation — gypsum for clay, compost for biology, wetting agent for hydrophobia.
Where Element Queensland fits in
We deliver garden bed renovations and full landscape replacements across South East Queensland and beyond. Read more on our landscape enhancements service or the wider enhancement & construction pillar.
Need this work delivered on your site?
Element Queensland delivers commercial landscape services across Brisbane, Moreton Bay, the Sunshine Coast and beyond. Talk to our team about scope, scheduling and reporting.
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