one of New Zealand's leading chemical applicators

Since Cambrilea was founded in Waikato in 1997, the quality of our work allowed Cambrilea Weed Spraying Services Limited to grow into one of the largest registered weed spraying contractors in New Zealand.

The company bears the name of the town where it was founded (Cambridge) and our founder, Charlie Lea.

Charlie is supported by a highly qualified team. This includes his wife, Helen, who holds a Bachelor of Landscape Architecture degree and has worked as head landscape architect for Hamilton City Council for many years. Her expertise is especially valuable for Cambrilea’s riparian planting and releasing service.


Everyone on our team is GROWSAFE ® accredited and approved handlers. We hold first aid Site Safe and Level 1 Traffic Controller Certificates.

Cambrilea already has hundreds of satisfied clients, ranging from agriculture, regional councils, quarries, utility companies, ecological sanctuaries and reserves.

We look forward to be of service to you too!

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Roadside Sraying

Cambrilea Weed Spraying (CWS) commenced roadside spraying operations in 2019, initially focusing on brush weed control in the Otorohanga rural roads district through a subcontracting arrangement with Bond Contracting. CWS undertook brush weed spraying tasks in accordance with a Traffic Management Plan (TMP), ensuring compliance with road signage requirements and diligently maintaining daily spray diaries, job safety analysis (JSA), and TMP plans. Our operational efficiency allowed us to cover a range of 50km to 100km per day, depending on the density of the brush weeds. CWS has successfully completed this contract multiple times since its inception, and we are proud to hold two Site Traffic Management Supervisor (STMS) tickets within our business.

In late 2022, CWS was engaged by Fulton Hogan to subcontract for the Matamata-Piako district Roading system. This extensive project involved the application of our own TMP plans for spraying all roadside furniture, traffic islands, and culverts, covering a distance of 1000km one way. With our TMP mobile plan and the support of a pilot vehicle, we efficiently utilised our hydraulic front-mounted boom and camera, along with handheld sprayers for culverts and traffic islands. Fulton Hogan conducted regular roadside audits on our TMP plans and vehicles, ensuring consistent compliance. We possess a comprehensive inventory of traffic management signage and road cones to ensure safe and effectve operations.

Approved contractor for:

Since we started operating in 1997, Cambrilea has been serving a large number of commercial enterprises and local authorities. Among others, we hold Approved Contractor status, doing work for:

  • Aotearoa Stations
  • Asplundh
  • Auckland Regional AuckCouncil
  • APL (Aluminium Profile Ltd)
  • C.H.H. Properties
  • Colliers International
  • Downers
  • Direct Management Services
  • Dunstan Group
  • Electrix
  • Fulton Hogan
  • Fonterra / Winstones
  • J. Swap Contractors
  • Kiwifruit Growers
  • Landcorp
  • Ingleby
  • Maxwell Farms
  • Meridian Energy
  • My Farm
  • NZ Corrections
  • Pengxin NZ
  • Ravensdown 
  • Rural Property Trust
  • Riverside Golf Club
  • Southern Cross Horticulture
  • Schick Civil Construction
  • Shaws Wire Ropes
  • Taupiri Holdings
  • Tainui Group Holdings
  • Transpower
  • Trinity Lands
  • Transfield Services
  • Waikato District Council
  • Waikato Regional Council
  • Waipa District Council
  • Wallace Corporation
  • Warrenheip (Cambridge Ecological Kiwi Sanctuary).

weed management - industry certification

At Cambrilea, our commitment to excellence is reflected in the specialised industry certifications held by our dedicated staff. Our team comprises certified professionals who bring a wealth of expertise to every project.

To view the certification of our company, please place your mouse over the PDF icon.

PREQUAL Totika Scheme Logo

Site Traffic Management Specialist - STMS

Prequal Totika Organisation

R.C.A Growsafe Certification

SHE PRE-QUAL Certification

Educhem Certification

Work Place Health & Safety Certification

First Aid

Chainsaw Certification