Autonomous mowing for tea tree plantations
Tea tree is planted at roughly 1 m row centres with about 280 mm in-row spacing — well over 27,000 trees per hectare. No 48" deck fits down active rows, and AutoAcre is upfront about that. But on a 50–200 ha tea tree operation the perimeter, firebreaks, headlands, fence lines, internal access tracks and freshly replanted blocks add up to roughly 8–12 ha of mowable non-crop surface — typically maintained by hand or by a contractor on a minimum call-out. That's where AutoAcre fits, and on the Casino-region operations running 500–2,000 ha it scales into a six-figure annual line.
By the numbers
Why autonomous mowing fits tea tree operations — at the right scope
ATTIA Code of Practice alignment — herbicide displacement on perimeters
The ATTIA Code of Practice is the industry's quality assurance framework and the document EU and Japan export buyers reference when they assess Australian supply. The Code rewards herbicide-displacement on non-crop surfaces — perimeter strips, fence lines, fallow blocks, distillery yards — without requiring any new certification on top.
An electric autonomous mower on a fortnightly perimeter cadence is a direct, demonstrable herbicide-displacement story. For the certified-organic operators in particular — G.R. Davis, Jenbrook and the Down Under Enterprises grower network — mechanical mowing of fallow and replanted ground keeps weed pressure suppressed without chemical drift onto active coppice rows or buffer zones.
Freshly replanted blocks before canopy closure
The 2022 floods permanently took out around 10 per cent of Australia's tea tree production area, with roughly 60 per cent of the industry directly affected. Four years on, replanting is still ongoing across the Northern Rivers — and freshly replanted blocks are mowable for the first months after planting, before the canopy closes and the row spacing makes wheeled access impossible.
That's a near-term mowing window the industry didn't have before the floods. AutoAcre fits cleanly into it: weed suppression on disturbed ground while the seedlings establish, with no risk of herbicide drift onto adjacent active blocks. Once the canopy closes, the unit moves to the next replanted block or back onto the perimeter rotation.
Firebreak maintenance in fire-prone country
The Northern Rivers fire season is real and a tea tree plantation is volatile fuel. Local Land Services and shire bushfire management require maintained firebreaks — typically 10 to 20 metres wide on plantation boundaries. A poorly maintained perimeter is a regulatory exposure and an insurance question, not just an aesthetic one.
An autonomous unit on a fortnightly cadence keeps firebreak vegetation low through the high-risk months without committing staff time. Crucially, it does that work during July to September — the harvest window, when every operator's labour is fully committed to the Lectro harvester, the distillery and the trucking. The perimeter gets mowed when no one has time to mow it.
Replacing the contractor minimum-call-out problem
Most plantation perimeter and firebreak work currently goes to a tractor-and-slasher rural contractor at $120 to $180 an hour all-up, or onto the staff roster as overtime in the wrong months. Either way the cost line is lumpy and the scheduling depends on someone else's availability — often during the wet season when contractors are stretched thin.
An autonomous unit on rotation across paddocks does the same work as a casual contractor or a part-time staffer, without the minimum call-out and without the schedule risk. On a 100 hectare plantation that's a $20,000 to $36,000 a year operating line; on a 500 hectare operation it's a six-figure line. The unit covers it with a known fortnightly cadence and the operator gets a predictable budget.
Independent and multi-brand
AutoAcre is the Northern Rivers' independent multi-brand dealer for commercial-grade autonomous mowing equipment. The recommendation for your plantation depends on perimeter length, firebreak width, slope and charging logistics — not on which manufacturer happens to have a contract with the dealer. The Buyer's Guide names every commercial-grade option in Australia on equal footing.
- Inside active rows during the 12 to 18 month coppice cycle. Physically impossible — 1 m row spacing, 1.2 m deck. Don't quote it, don't try it.
- During the harvest period when the Lectro two-row harvester is working a block. The unit pauses; the harvester has the right of way.
- The immediate post-cut zone in the first weeks after coppicing. New shoots appear within 3 to 6 weeks of harvest and the regrowth is too tender — the unit shouldn't be on it until the block has gone properly fallow or moved to the next rotation.
- Saturated wet-season ground. The 38° slope envelope is for dry conditions. Northern Rivers clay headlands during a February rain event still want a tractor in the shed for catch-up work.
How a deployment looks on a Northern Rivers tea tree plantation
Site walk first — perimeter, headlands, firebreaks measured
The first conversation is a half-hour by phone — plantation size, block layout, perimeter length, firebreak widths, current contractor or staff arrangement, what you're hoping to solve. If it sounds like a fit, AutoAcre comes out for a site walk. Walking the perimeter and headlands with a measuring tape, a slope gauge and a GPS-coverage check is what tells the truth. The 8 to 12 hectares of mowable non-crop surface on a 50 hectare operation is an industry estimate — the real number on your property comes off the ground, not a brochure.
Charging dock — sheltered, mains-powered
The autonomous unit needs a dock with a sheltered roof and a standard mains power outlet. On a working tea tree operation the existing distillery-shed or harvester-shed eave usually does the job. On larger blocks where the working perimeter sits well away from infrastructure, a small dedicated shelter near the dock site is a one-time setup cost — AutoAcre scopes that into the proposal so there are no surprises.
Two ways to run it
You buy the unit outright and run it in-house, or AutoAcre owns and operates it on your site under a managed-service contract. The right answer depends on whether you have the in-house capacity to manage charging, mapping, blade replacement and firmware — and on whether the capital outlay or the predictable monthly opex is the easier number for your operation. For Main Camp-scale operations a fleet pilot on one block before fleet roll-out is the realistic pathway.
Pre-launch — and what that means
AutoAcre's managed-service operations launch Q1 2027. Right now AutoAcre is open for site assessments, demonstrations, Buyer's Guide deep-dives and calculator runs — exactly the decision-support work that earns its keep before a plantation manager could commit capital. The Northern Rivers' first commercial tea tree perimeter deployment is an open slot for the right early customer, ideally in the Casino–Coraki–Rappville corridor where the buyer pool is concentrated.
Common questions from plantation operators
Can you mow between active tea tree rows?
No. Tea tree is planted at roughly 1 metre row centres with about 280 mm in-row spacing — over 27,000 trees per hectare. A 48-inch (1.2 m) commercial-grade autonomous deck cannot fit down active rows, and nor can any other wheeled deck of that class. AutoAcre is upfront about this. The value on a tea tree plantation is on perimeters, headlands, firebreaks, fence lines, internal access tracks, fallow blocks and freshly replanted ground before canopy closure — not in the active coppice rows.
What's the realistic scope on a tea tree property?
On a typical 50 to 200 hectare tea tree plantation, the non-crop mowable surface — headlands, perimeter strips, firebreaks, internal access tracks, distillery yards, fallow blocks and freshly replanted ground — adds up to roughly 8 to 12 hectares per 50 hectares of planted area. On a 500 hectare operation that scales to 80 to 120 hectares of perimeter and infrastructure mowing. That's the surface AutoAcre is built for, and it typically wants 6 to 10 passes a year for fire compliance and weed suppression.
Does this complement the ATTIA Code of Practice?
Yes. The ATTIA Code of Practice is the industry's quality assurance framework and rewards herbicide-displacement on non-crop surfaces. Mechanical perimeter and fallow-block mowing with an electric autonomous unit is a direct herbicide-displacement option that fits the Code's biological and chemical hazard prevention language without requiring any new certification — and it strengthens the EU and Japan export-buyer story that ATTIA-trustmark suppliers already lean on.
What about firebreak maintenance?
Firebreaks are one of the strongest fits. Local Land Services and shire bushfire management require maintained firebreaks — typically 10 to 20 metres wide on plantation boundaries — and a tea tree plantation is volatile fuel in a fire event. An autonomous unit on a fortnightly cadence keeps firebreak vegetation low through the high-risk months without committing staff time during the July to September harvest window when every operator is flat-out on the harvester and distillery.
Is this useful between coppice cycles?
Partially. In the immediate post-cut zone — the first weeks after the Lectro harvester has worked a block — regrowth is too tender and the unit shouldn't be on it. Once a block has gone fallow between rotations, or during the months after replanting before the canopy closes, the ground is genuinely mowable and weed pressure benefits from suppression. This is a smaller window than the perimeter and firebreak work, but it's real — and after the 2022 floods, ongoing replanting across the region has opened up more of these freshly replanted blocks than usual.
AutoAcre is pre-launch — what does that mean for me?
AutoAcre is the Northern Rivers' independent multi-brand dealer for commercial-grade autonomous mowing equipment. Managed-service operations launch Q1 2027. Right now AutoAcre is open for site assessments, demonstrations, calculator runs, and Buyer's Guide deep-dives — exactly the decision-support work plantation managers need before they could commit capital. Joining the launch list puts you first in queue when commercial deployments open, and a Casino-region tea tree demo on a working perimeter is an open slot for the right early customer.
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