Yes, you can generally remove a cabbage tree (Cordyline australis) trunk yourself once it has been cut down — but before you grab the chainsaw or hire a skip bin, there are a few important things to check first. Council rules, the size of the tree, and your own safety all play a role in whether this is a straightforward DIY job or one better left to a qualified arborist.
Check Your Council Rules Before You Start
This is the most important first step. While cabbage trees are native to New Zealand, they are not automatically protected everywhere. Many local councils have tree protection rules in their district plans that may require a resource consent before you remove or cut down a significant tree — even on your own property.
Some councils specifically list cabbage trees over a certain trunk diameter or height as protected. Others have blanket rules covering all native species. Always check with your local council before cutting, not after. If the tree was already cut down before you read this, it is still worth checking whether the removal was compliant, as enforcement can follow after the fact.
For guidance on what building and resource consent rules apply, MBIE Building Performance is a useful starting point, though tree removal is typically governed by the Resource Management Act rather than the Building Act.
Is the Trunk Safe to Work Around?
Cabbage trees have a distinctive fibrous trunk that behaves differently from timber trees. Here are some key safety points:
- Freshly cut trunks can be heavy and unstable — a large cabbage tree trunk can weigh several hundred kilograms.
- The fibrous root system is extensive and can make the stump difficult to lever or winch out.
- If the tree was diseased (for example, affected by sudden decline, a condition caused by a phytoplasma), the trunk may be soft and unpredictable to handle.
- Always wear PPE: steel-capped boots, gloves, eye protection, and a hard hat if there is any risk of the trunk rolling or shifting.
Review safe working practices at WorkSafe NZ before undertaking any heavy manual work.
How to Remove the Trunk
Once you have confirmed removal is lawful and the area is safe, here is a general approach:
Breaking It Down
- If the trunk is very large, use a chainsaw to cut it into manageable sections (typically 300–500 mm lengths). Cabbage tree fibre can bind chainsaw bars, so keep the chain sharp and work carefully.
- Smaller sections can be rolled, carried, or loaded into a trailer by two people.
Stump Removal
The stump and root ball are often the hardest part:
- Manual digging and cutting: Use a spade and loppers to sever the fibrous roots around the perimeter, then lever the stump out. This works well for smaller specimens.
- Stump grinder: For large stumps, hiring a stump grinder (available from most hire centres) is the most effective DIY option. Always read the operator manual and wear full PPE.
- Chemical treatment: Applying a stump treatment product (available at Bunnings or Mitre 10) can help break down the remaining root system over time, though cabbage trees can reshoot vigorously from the roots if not fully removed.
- Note: Cabbage trees can regrow from cut stumps and roots, so thorough removal or treatment is important if you do not want regrowth.
A Useful Comparison
| Method | Best For | Approx. Effort | Cost Guide |
|---|---|---|---|
| Manual dig and cut | Small to medium stumps | High | Low (your time) |
| Hired stump grinder | Medium to large stumps | Medium | Moderate hire fee |
| Professional arborist | Large, difficult, or protected trees | Low (for you) | Higher, but safe |
Disposing of the Trunk and Debris
- Cabbage tree material is not suitable for firewood — it is too fibrous and wet.
- It can be composted or chipped if you have access to a chipper.
- Many councils accept green waste at transfer stations; check your local council's website for drop-off rules.
- Hire a skip bin for large volumes, or arrange a green waste collection.
- Do not dump green waste in bush or waterways — this is illegal and can spread plant disease.
When to Call a Professional
Consider hiring a qualified arborist if:
- The trunk or stump is very large (over 400 mm diameter at the base).
- The tree is near a house, fence, power lines, or other structures.
- You are unsure whether council consent was required.
- The ground is sloped or unstable.
- You do not have the right equipment or experience with chainsaws and heavy lifting.
A New Zealand Arboricultural Association (NZAA)-qualified arborist will have the skills, insurance, and equipment to do the job safely and legally. You can find qualified local arborists on tradedirectory.co.nz.
Note on electrical lines: If the tree or trunk is anywhere near overhead power lines, do not attempt removal yourself. Contact your lines company first, and engage a professional.
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