IWA- Scotland's Invasive Weeds Specialist
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Invasive Weed Services

Invasive Weeds

 For specific information on an invasive weed species and the treatment options we offer, click on the pics below
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Japanese Knotweed
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Giant Hogweed
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Himalayan Balsam
(Page Under Construction)
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Horsetail
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(Page Under Construction)

The Process

From the initial contact through to eradication, the steps below explain the invasive weed management process.
1. SURVEY
A professional site survey is an integral part of the treatment programme for controlling invasive weeds.
Our team provide comprehensive site surveys which identify the extent of the invasive weed infestation, the potential impact on the environment and the intended use of the site.
Invasive weeds needs to be controlled swiftly and effectively to protect both the environment and the individual’s legal obligation.
By responding quickly to enquiries, we help minimise the spread of the weeds and keep the costs associated with treating them as low as possible.
​2. Proposal
​We issue a proposal document after we have completed a site survey. The proposal details our findings from the survey and lists the options for controlling the invasive weeds present on site.
Often there are several treatment options available, each with different timescales for completion and prices for each option.
3. MANAGEMENT PLAN
Once a survey has been done, a site specific management plan (Japanese Knotweed Management Plan for Japanese knotweed projects) will be written if we are instructed to do so. The management plan includes all relevant site information and identifies a strategy for eradication of the invasive weeds.
4. Treatment
The most appropriate treatment method for eradication of the invasive weed will have been identified in the Management Plan. Treatment* will take place and the treatment programme will run until eradication has been achieved.

*Treatment is a term used for any of the eradication methods, e.g. herbicide spraying is a treatment. Mechanical removal and disposal of invasive weeds at landfill is also classed a treatment.
5. MONitoring
Upon completion of the treatment programme, a monitoring period will run for at least 2 years. Monitoring is done to ensure that any regrowth is controlled before it can become well-established. Monitoring visits take place during the months when active growth would be visible (May-September).
6. Guarantee
An insurance back guarantee (IBG) will be issued once the treatment period and 2 years of monitoring have finished. The IBG will run for either 5 or 10 years. 

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Treatment Methods

Herbicide Spraying
STEM Injection
DIg & Dump
On site Burial
Relocation & Treatment
Root barrier

Other Invasive Weed Services

On Site Supervision / Watching brief
decontamination
soil analysis & reporting
digging trial holes/pits

Invasive Weeds Info

Japanese Knotweed
Giant Hogweed
Himalayan Balsam
Buddleia
Rhododendron
Japanese Rose

IWA Group Ltd 2022
Company Registration: SC332319
VAT Registration: 935 0467 23
T: 01383 324 335    E: info@iwa.scot
  • Home
  • Services
    • Japanese Knotweed
    • Invasive Weeds >
      • Giant Hogweed
      • Himalayan Balsam
      • Horsetail
      • Buddleia
      • Rhododendron
    • Tree Works
    • Site Clearance
    • Ecological Services
  • About
  • FAQ
  • Success Stories
  • News
  • Contact