Invasive Weed Surveys & Management

With increasing legislation around invasive plant species, particularly Japanese knotweed, Giant hogweed, and Himalayan balsam, effective management is essential for landowners and developers.

As consultant members of the Invasive Non-Native Specialists Association (INNSA), Lucion provides expert guidance and solutions for all invasive weed challenges.

Invasive Species Surveys

Our qualified ecologists conduct thorough site assessments to identify and map the presence of invasive species including;

Japanese Knotweed (Fallopia Japonica)
Giant Hogweed (Heracleum mantegazzianum)
Himalayan Balsam (Impatiens glandulifera)
Cotoneasters

We provide detailed reports including species identification, extent of infestation, and recommended control measures.

As experts in invasive species identification, we understand the significant impact these plants can have on development projects and property values. Our team works closely with clients, contractors, and local authorities to identify risks and protect your interests while consulting on legislative requirements.

Case studies

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Brockhampton West Landfill Site, Havant

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Contaminated Land Advisor – SmartParc

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Air Quality Assessment for Healthcare Development Project

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Trusted Arboricultural Services

The Arboricultural Association Membership

Our Arboriculture Team members hold Technician Member level with The Arboricultural Association.

IEMA EIA Quality Mark

Lucion Delta-Simons Ltd has achieved the Institute of Environmental Management & Assessment’s (IEMA) Quality Mark for Environmental Impact Assessment as a large producer of Environmental Statements and Chapters.

Chartered Institute of Ecology and Environmental Management

Lucion’s team of Ecologists undergo specialist training and maintain active membership with the Chartered Institute of Ecology and Environmental Management.

Invasive Species FAQs

Yes, particularly for species like Japanese knotweed and Giant hogweed. We work with INNSA-registered contractors to ensure all treatment work meets industry best practice standards and regulatory requirements.

Treatment duration varies depending on the species present and the extent of infestation. Japanese knotweed typically requires a minimum 3-year treatment programme, while other species may be controlled more quickly.

If invasive species are identified, we can provide advice on next steps and provide contact details for specialist contractors who will be able to assist with the development of a management plan tailored to your site and circumstances. This may include treatment programmes, containment measures, and necessary documentation for planning authorities or property transactions.

While surveys can be conducted year-round, the optimal period is during the growing season (April to October) when plants are most visible and identifiable. However, evidence of some species, particularly Japanese knotweed, can be detected even during winter months.

Under the Wildlife and Countryside Act 1981 (as amended), it’s an offence to allow certain invasive plants to spread in the wild. Additionally, species like Japanese knotweed can significantly impact property values and development potential. Professional surveys help identify risks early and ensure compliance with legislation.