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Control. What is giant hogweed? Although an impressive sight when fully grown, giant hogweed is invasive and potentially harmful. Chemicals in the sap can cause photodermatitis or photosensitivity, where the skin becomes very sensitive to sunlight and may suffer blistering, pigmentation and long-lasting scars.
- Heracleum Sphondylium
The hogweed is more diminutive than its infamous cousin,...
- RHS Gardening
Giant hogweed is a controlled waste (similar to Japanese...
- Heracleum Sphondylium
Learn how to effectively control Giant Hogweed with our comprehensive, step-by-step guide. Discover safe methods, prevention tips, and the importance of professional services for managing this invasive species in the UK
- Overview
- Types of invasive non-native plants
- Treat invasive non-native plants
- Dispose of plant material
- Contact the Environment Agency
How to stop the spread and dispose of invasive non-native plants that can harm the environment in England.
The most commonly found invasive non-native plants include:
•Japanese knotweed
•Giant hogweed
•Himalayan balsam
•Rhododendron ponticum
•New Zealand pygmyweed
You can treat and dispose of invasive non-native plants by:
•spraying with chemicals
•pulling or digging out live, dead or dying plants
•cutting back plants to prevent the seeds dispersing
•burying them
•burning them
Bury plants
You can dispose of invasive non-native plant waste in a landfill site if you have an environmental permit that allows it. This includes soil containing Japanese knotweed or its rhizome (stems that grow underground and can produce roots). To bury invasive non-native plant waste without a permit, you must follow the conditions in the treatment and disposal of invasive non-native plants: RPS 178.
Burn plants
If you want to burn plant material at the site where it’s growing after you remove it, you must: get a burning waste in the open exemption (a D7 exemption) follow local byelaws and not cause a nuisance follow the conditions set out in the treatment and disposal of non-native plants: RPS 178 guidance when you bury ash or any remaining plant material on site, or dispose of it at a permitted landfill site You must not: cause a risk to water, air, soil, plants or animals cause a nuisance through noise or odour harm the countryside or places of special interest If you’re burning waste as an individual, contact your local council to check that burning is allowed.
How to safely dispose of plants off site
Soil or plant material contaminated with invasive non-native plants can cause ecological damage and may be classified as controlled waste. For example, it may contain seeds, rhizomes, corms or fragments of plants that could regrow. To dispose of invasive non-native plant waste off site, you must: use a registered waste carrier send it to an authorised landfill site or suitable disposal site – check with the site directly, contact your local council or check the Environment Agency public register You cannot compost most non-native plants because they: are usually persistent will survive the composting process usually infest areas where the compost is used You must responsibly dispose of all soil contaminated with persistent chemicals (including herbicides that do not break down), which are usually hazardous waste. Find out how to dispose of: hazardous waste business and commercial waste In most cases, you’ll need to hire a specialist contractor. If you use a site which is not permitted to dispose of waste, you could be fined or go to prison.
Contact the Environment Agency if you want to:
•find out when you need a waste licence to dispose of waste
•complain about waste producers passing Japanese knotweed waste to waste carriers without telling them what it is
General enquiries
National Customer Contact Centre
PO Box 544
The most effective treatment method for giant hogweed is to treat the emerging leaves with herbicide (Glyphosate) in the spring to early summer. We generally treat between March and July and often visit each treatment site twice, to apply a follow up treatment to any late emerging or missed plants.
Giant hogweed is a controlled waste (similar to Japanese knotweed) so, if it is taken off site, can only be disposed of in licensed landfill sites with the required documentation. To avoid this, dispose of any plant material (dug up or cut down) by composting or burning.
Control and Removal of Giant Hogweed Spraying – chemical application is the most effective treatment available, although it can take several years to eradicate this species if the plants are well established.
Aug 22, 2024 · Yes, giant hogweed is very poisonous to dogs, and can cause severe skin burns and abrasions, mouth ulcers and even vomiting and diarrhoea. All you need to know about identifying and controlling giant hogweed. Expert advice from BBC Gardeners' World Magazine.
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