Invasive weed
control on
difficult terrain.
Great Southern
& Southwest WA.
ARC11 provides remote-controlled vegetation management targeting invasive weeds on steep slopes, drainage corridors, and access-constrained terrain across the Great Southern and Southwest — where conventional manned plant can't safely or effectively reach.
Invasive weeds
don't grow on
flat ground.
The hardest-to-control weed infestations in the Great Southern and Southwest are almost always on the ground that's hardest to access — steep creek banks, drainage batters, hillside remnants, roadsides, and post-fire regrowth areas where conventional mowing equipment can't safely operate.
Leaving weeds on difficult terrain because it's too steep or too wet for standard plant is how infestations spread. ARC11's remote-controlled equipment operates where other machinery can't — removing the infestation without removing the operator from safe ground.
"The best weed control happens where the weeds actually are — not just where it's easy to get a tractor."
- —Steep creek and drainage banks — rollover risk prevents safe mowing where Arum Lily and Blackberry thrive most
- —Soft and wet ground — heavy plant churns up soil and damages drainage lines, spreading weed seeds
- —Post-burn regrowth — unstable ground after fire events limits safe machinery access during critical weed control windows
- —Dense established infestations — thick Blackberry, Gorse, and Briar Rose require mulching capability standard mowers lack
- —Asset-adjacent sites — drains, fences, culverts, and water infrastructure limit where conventional plant can safely operate
The weeds ARC11
targets on difficult terrain.
One of the most significant declared weeds in the Great Southern and Southwest. Arum Lily colonises creek banks, drainage lines, roadsides, and disturbed ground — particularly on the moist, sheltered slopes where it's hardest to treat with conventional machinery. Dense colonies can cover entire drainage corridors, reducing pasture productivity and spreading rapidly through corm fragments and seed dispersal.
Blackberry is one of WA's most widespread declared weeds and a significant problem across the Great Southern and Southwest. Dense, thorny thickets establish rapidly on creek banks, hillsides, roadsides, and disturbed ground. Its arching canes root where they touch soil, making physical control critical. Infestations on steep slopes and creek lines are particularly difficult to address with conventional mowing equipment.
Gorse forms dense, impenetrable thickets on hillsides, roadsides, and disturbed terrain in the wetter parts of the Great Southern and Southwest. It's highly flammable, making it a significant fire risk on slopes adjacent to residential and rural properties. Dense spiny growth makes manual control difficult and dangerous, and its seed bank persists in soil for decades. Effective control requires mechanical mulching to reduce fire fuel load and infestation density.
African Lovegrass is a significant weed on roadsides, embankments, and disturbed ground across the Great Southern and parts of the Southwest. It outcompetes native species, reduces pasture productivity, and establishes rapidly on road batters and drainage lines. Dense infestations on steep embankments and roadsides are difficult to manage with conventional equipment without significant rollover risk.
Bridal Creeper is a significant declared weed in woodland and bushland remnants across the Southwest and parts of the Great Southern. It smothers native understorey vegetation, climbing through shrubs and creating dense mats that eliminate ground-layer species. It thrives in sheltered, moist conditions — often on slopes and in drainage lines where access is constrained. Tuber systems make it highly persistent and difficult to eradicate.
Cape Weed is widespread across WA roadsides, pastures, and disturbed ground in both the Great Southern and Southwest. It forms dense mats that suppress pasture and native species, and spreads rapidly along roadsides, drainage lines, and disturbed slopes. While less aggressive than some weeds, large-scale infestations on steep roadsides and embankments require mechanical management to prevent ongoing spread.
Also known as Paterson's Curse, Salvation Jane is a significant declared weed on roadsides, pastures, and disturbed ground across the Great Southern and agricultural areas of the Southwest. It's toxic to livestock and competes aggressively with pasture species. Dense infestations on steep road batters and drainage lines require mechanical control to reduce seed set and prevent further spread into adjacent land.
Serrated Tussock is an aggressive invasive grass that colonises pastures, roadsides, and disturbed ground, particularly in the cooler, wetter parts of the Great Southern and Southwest. It has very low feed value and outcompetes productive pasture species. Dense infestations on steep embankments and roadsides are difficult to manage without specialist equipment capable of safely operating on gradient.
Fleabane species are increasingly problematic on roadsides, drainage lines, and disturbed ground across WA. Tall-growing infestations on steep embankments and drainage corridors create visibility hazards on roadsides and reduce the effectiveness of pasture and native revegetation programs. Herbicide resistance is an emerging issue, making mechanical management an important component of integrated control.
Wild Radish is one of WA's most economically significant broadleaf weeds, widespread across agricultural land in the Great Southern and Southwest. Dense infestations on steep paddock margins, drainage lines, and roadsides contribute to seed banks that reinvade cropping and pasture systems. Pre-seed mechanical control on difficult terrain reduces the ongoing reservoir of weed seed in high-risk areas.
Kikuyu is an aggressive pasture grass that becomes invasive on roadsides, drainage lines, creek banks, and disturbed ground across the wetter parts of the Great Southern and Southwest. It spreads by stolons and rhizomes, smothering native vegetation and becoming extremely dense on moist slopes and drainage corridors. Infestations on steep banks and creek lines require mechanical management to prevent wholesale displacement of native vegetation.
Prickly Pear species are declared weeds in WA that establish on roadsides, disturbed ground, and rocky slopes — particularly in drier parts of the Great Southern. Dense infestations create impenetrable barriers, restrict stock access, and are hazardous to handle manually. Physical control on steep or rocky terrain where the plant establishes is difficult without purpose-built equipment.
Mechanical weed
control where
it's needed most.
Mechanical control is a critical component of any integrated weed management program — particularly for established infestations on terrain that's inaccessible to conventional equipment.
ARC11 doesn't replace herbicide programs. We make mechanical control possible on the terrain where infestations are most established and where conventional plant can't safely or effectively operate — giving herbicide and revegetation programs the best possible starting point.
- —Access to difficult terrain — up to 60° slopes, soft ground, drainage batters, and constrained corridors
- —Dense scrub processing — tungsten-carbide head mulches Blackberry, Gorse, and Briar Rose up to 150mm in a single pass
- —Low ground disturbance — 2.4 psi ground pressure minimises soil disturbance and weed seed spread during treatment
- —Mulch stays on site — processed material remains as ground cover, reducing erosion risk after treatment
- —Operator safety — remote-controlled operation keeps personnel off steep, unstable, and weed-covered terrain
Great Southern
& Southwest WA.
ARC11 is based in the Great Southern and operates across the region's diverse terrain for weed management — from Albany's coastal slopes and Denmark's karri country to the agricultural land of Katanning and Kojonup, and across the Southwest from Bunbury to Pemberton.
- —Great Southern Albany · Denmark · Mount Barker · Katanning · Kojonup · Cranbrook
- —Southwest Bunbury · Busselton · Margaret River · Nannup · Pemberton · Manjimup
- —Beyond Contact us with your location — we service broadly across WA for larger engagements