Side-By-Side Comparison
| Factor | Forestry mulching | Excavator clearing |
|---|---|---|
| Method | Grind to mulch in place | Push, pile, cart, or dig out |
| Machine | CAT 299D3 XE + HM518 | 13–30t excavator + grapple / bucket |
| Per-acre cost | $1,800–$8,500 | $3,500–$12,000+ |
| Speed | 0.15–0.55 ac/hr | Half that on vegetation |
| Soil disturbance | Minimal | Significant |
| Waste created | None (mulch stays) | Major (truck loads) |
| Burn permits needed | No | Sometimes |
| Best for trees >400mm DBH | No (drop first) | Yes |
| Best for full stump removal | No | Yes |
| Best for fire-break prep | Yes | OK |
| Environmental footprint | Low | Higher |
When To Choose Forestry Mulching
- Vegetation up to ~300mm DBH dominates the site.
- You don't need bare ground — pasture, fire-breaks, fence lines.
- Block is in a koala / wetland / regulated area where soil disturbance is restricted.
- Budget matters — mulching is consistently the cheaper option per acre.
- You want regrowth suppression — the mulch layer holds back weeds for 6–18 months.
When To Choose Excavator Clearing
- Site will become a building pad — needs bare earth.
- Standing trees over 400mm DBH need to come out.
- Stumps need to be physically removed (not just ground down).
- Block has significant bulk earthworks scheduled — combine with the dig.
- Hard rubbish, old fences, derelict structures need to be dragged out alongside vegetation.
Not sure which approach fits your block?
Send a Google Maps pin and a couple of photos — we'll tell you straight up which method wins, and quote both if it's borderline.
The Hybrid Approach — How Most SEQ Acreage Clears Actually Run
The cheapest, fastest way to clear a typical 5–10 acre SEQ hinterland block with mixed vegetation:
- Excavator + grapple drops any standing trees over 400mm DBH (1–2 days).
- Skid steer + HM518 mulches everything — the dropped timber, the lantana, the regrowth (2–4 days).
- Optional: excavator returns for stump grinding or pad cuts.
This sequence costs 20–35% less than excavator-only clearing and 30–50% less than burn-and-cart, with a fraction of the waste and zero burn permits.
Environmental Comparison
| Metric | Mulching | Excavator + cart |
|---|---|---|
| Soil disturbance | Low — tracks only | High — boom + bucket |
| Erosion risk | Reduced (mulch layer) | Increased |
| Truck movements per acre | 0 | 8–20 |
| Diesel burn per acre | ~80–120 L | 200–400 L (mach. + trucks) |
| Carbon retained on site | Yes — mulch layer | No — carted off |
| Habitat disruption | Lower | Higher |
Related
- How forestry mulching works
- How to clear overgrown acreage efficiently
- Skid steer vs excavator comparison
- 2026 Rates Guide
FAQ
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