On the hills, slope and rock decide the job.
Pakenham Upper is semi-rural acreage on the edge of the Dandenong Ranges foothills. Steep, treed, shallow topsoil over basalt float. Two things change a stump job up here that do not exist on the flats: how far a machine can safely lean, and what is buried inside the root flare.
Slope limits which machine can work.
A tracked stump grinder is a top-heavy object with a spinning wheel on one end. On level ground that is fine. On a slope it is a stability calculation, and the direction matters more than the gradient. Working up and down a slope keeps the machine's weight over its tracks. Working across a slope puts it on the side of its tracks with the wheel swinging out over the low side, and that is where a grinder goes over.
What that means for a Pakenham Upper quote is that we look at the approach before we look at the stump. A stump you can reach from directly above or below is workable on ground that would be unsafe to traverse. A stump on a bench with the only approach along the contour is a different conversation. On the steepest blocks the honest options narrow to a smaller machine and a longer job, cutting from one side only and accepting the extra time, or telling you it cannot be done safely. That last one happens occasionally and we would rather say it at the quote than halfway through.
Slope also changes what happens after the cutting. Grindings on a slope do not sit where you rake them. Water moves them downhill, and a mound raked over a hole on a fifteen degree fall will migrate and leave the hollow exposed within a couple of wet months. On sloping ground the sensible finishes are to cart the spoil away at $120 to $350 and backfill with clean topsoil, or to use the grindings somewhere flat on the property and bring soil to the hole. The options are set out in what to do with stump grindings.
A buried rock can stop a job dead.
The ground up here is shallow topsoil over basalt, with loose basalt float scattered through the profile. Carbide teeth cut wood, soil and grit. They do not cut basalt. A tooth that meets a rock at full cutting speed chips, and if the rock is solid enough the tooth shears off its holder.
What makes it a genuine hazard rather than an occasional annoyance is that you cannot see it coming. A tree that grew on rocky ground for eighty years grows around the stones near it, so a lump of basalt can end up locked inside the root flare with soil and bark over the top. Nothing on the surface tells you it is there. The first sign is the sound changing and the machine stopping.
When it happens the options are to change teeth and work around the stone if it is off to one side, to hand dig it out if it is small enough to lever, or to accept a shallower grind at that point. All three cost time. That is why hill quotes get given with the possibility named up front rather than as a variation invoice afterwards. If a stump is sitting in obviously stony ground and the end use demands full depth, the cleaner answer is often excavation rather than grinding, because a machine bucket deals with a rock in a way a cutting wheel cannot.
The related trap on acreage: old fencing. Hill boundaries move over the decades, and a tree that grew on an old fence line will have wire, staples or the remains of a strainer post grown into the base. Steel does the same to carbide teeth as rock does. If a stump is anywhere near a current or former fence line, say so when you ring.
Native remnants, and shelter belts.
Two populations again, and they need different things. The first is native remnant, mainly messmate stringybark and manna gum, standing on acreage that was never fully cleared. These are big, dense hardwood stumps with wide root plates, and hardwood costs more than its diameter band suggests because carbide teeth blunt several times faster on it than on softwood. A large messmate is comfortably an $800 to $1,500 job once the flare is accounted for.
The second is planted shelter belt, mostly pine and cypress, put in as windbreaks across the exposed hill blocks. These come as runs rather than single stumps and they are priced accordingly, at $1,400 to $2,600 per day rather than per stump, because on a long run the set-up is the cost and the cutting is the cheap part. Two quirks are worth knowing. Shelter belts are planted at close regular spacing, so neighbouring root systems interlock and the ground between the stumps is full of root rather than clean soil. And cypress is hard, resinous timber that eats teeth, so a cypress run costs more per metre than a pine run of the same size. Species detail is in gum, palm and pine stump removal, and whole-run work is covered under land clearing.
The rules are about the living tree, not the stump.
Pakenham Upper is where Cardinia Shire's vegetation controls bite hardest, and it is also where people most often misunderstand what they cover. Two separate systems can apply to a hill property at the same time.
- The Tree Protection Local Law. Covers living trees with a trunk circumference of 110cm or more measured at 1.4m above ground, which is roughly 35cm in diameter. Indigenous remnant species are protected at any size at all, and the list includes Messmate Stringybark and Manna Gum, which is precisely what grows on these blocks, along with River Red Gum, Yellow Box and Blackwood.
- Overlays under the Planning Scheme. Environmental Significance Overlays and Vegetation Protection Overlays sit over large parts of the hills. They operate on top of the Local Law and are a separate and slower process, not an alternative to it.
Both of those are about a tree that is still standing. Grinding a stump that has already been cut is not normally a permit matter, whether it was felled last week or a decade ago. That distinction matters up here because a lot of people with an overlay across their title assume they cannot touch anything, and leave stumps standing in paddocks for years on the strength of that assumption.
If your tree is still up, deal with the permit before anyone starts cutting, and check the current requirements, fees and processing time directly with Cardinia Shire, because those change. Take it seriously: penalties for removing a protected tree without approval are substantial, and under the Planning and Environment Act the maximum for an individual is a very large sum. Where we are not certain which controls apply to a title, we check before quoting rather than after.
What changes the number up here.
| Factor | Effect on the job | Typical figure |
|---|---|---|
| Slope of the approach | Limits machine choice and cutting angles. Across-slope work is slower or refused. | Adds time, occasionally rules a stump out |
| Basalt float in the flare | Teeth chip or shear. Work stops while the stone is dealt with. | Named as a risk before we start |
| Hardwood remnant, messmate or manna gum | Teeth blunt several times faster than on softwood | Prices above the diameter band |
| Pine or cypress shelter belt run | Priced by the day, not the stump. Interlocked roots between trees. | $1,400 - $2,600 per day |
| Spoil on sloping ground | Grindings migrate downhill. Rake-back finish does not hold. | Cart-away $120 - $350, topsoil $80 - $220 |
The base bands still apply: under 300mm is $180 to $280, 300 to 600mm is $280 to $480, 600 to 900mm is $450 to $800, and past 900mm or multi-stem starts at $800. Hill work sits at the upper end of its band more often than flat work does, and each extra stump on the same visit still costs thirty to fifty per cent less, which is why it pays to have every stump on the property looked at in one go rather than calling twice.
Questions from the hills.
How steep is too steep for a stump grinder?
There is no single number, because it depends on the machine, the direction of the slope relative to the tracks and how firm the ground is that day. A tracked grinder is far more stable working up and down a slope than across it, so a stump that can be approached from above or below is workable on ground that would be unsafe to traverse. Where the only approach is a side slope, the answer is a smaller machine, a longer job, or on the steepest blocks no job at all. That is not about price, it is about whether the machine stays upright with an operator behind it.
What happens if the machine hits a rock in the stump?
Carbide teeth are made for wood, and a tooth that meets basalt at full cutting speed chips or shears off. Up here that is a real possibility rather than bad luck, because the topsoil is shallow and loose basalt float sits in and around root flares. Old trees grow around stones, so a rock can be locked inside the flare with nothing on the surface showing it. If we hit one, work stops, and the options are to change teeth and work around it, hand dig it out if it is small enough, or accept a shallower grind. We name that risk on hill quotes before we start.
Do I need a permit to remove a tree on acreage in Pakenham Upper?
Very possibly, and this is the part of the shire where it is most likely. Two systems can apply. The Tree Protection Local Law covers living trees with a trunk circumference of 110cm or more at 1.4m above ground, and protects indigenous remnants at any size, including Messmate Stringybark and Manna Gum which are exactly what grows up here. On top of that, Environmental Significance Overlays and Vegetation Protection Overlays under the Planning Scheme cover large parts of the hills and are a separate, slower process. Check current requirements and fees with Cardinia Shire, because they change.
Does the permit apply to the stump as well as the tree?
No. The controls apply to the living tree. Grinding a stump that has already been cut is not normally a permit matter, whether the tree came down last week or ten years ago. This trips people up on hill properties, because an Environmental Significance Overlay across the title reads as though nothing can be touched, and stumps get left in paddocks for years on that assumption. If the tree is standing, deal with the permit first and take it seriously, because penalties for removing a protected tree without approval are substantial. If it is already a stump, that part is behind you.
Can you clear a shelter belt of old pine or cypress?
Yes, and on acreage that work is priced by the day at $1,400 to $2,600 rather than per stump, because with a run of stumps the set-up is what costs and the cutting is the cheap part. Pine and cypress belts are common through these hills and they have two quirks. They are planted at close regular spacing, so neighbouring root systems interlock and the ground between them is full of root. And cypress is hard, resinous timber that blunts carbide teeth several times faster than a young gum, which is the real cost driver on a long run.
Also working across the shire.
Tell us the slope and the ground, not just the stump.
On a hill block the approach matters as much as the diameter. A photo taken from downhill, showing the stump and the ground a machine would have to cross, is worth more than any measurement.