Japanese Knotweed Identification

Japanese Knotweed through the seasons

TL;DR — Quick Facts at a Glance Key features: Hollow bamboo-like canes with purple speckles; heart/shield-shaped leaves with flat base; leaves alternate in a zig-zag; dense upright thickets; creamy-white flowers in late summer; dark brittle canes in winter. By season: Spring = red/purple “asparagus” shoots → Summer = 2–3 m canopy → Late summer–Autumn = […]

Japanese Knotweed Wiki

How to deal with this invasive species step by step - the do's and the dont's

Your Essential Japanese Knotweed Guide Your definitive UK guide from Knotweed Services — identification, risks, UK law, treatment options, costs, and exactly what to do next. Quick Facts (At a Glance) Latin name: Fallopia japonica (syn. Reynoutria japonica, also known as Polygonum cuspidatum in some botanical and medicinal contexts) Origin: Eastern Asia (Japan and China), […]

How Does Japanese Knotweed Spread?

A Japanese knotweed plant with a P35 CPR Compliant Report in the background

Japanese knotweed (Fallopia japonica) is one of the UK’s biggest environmental headaches, causing structural damage and overwhelming native ecosystems. From Japan, Japanese knotweed is a non native species in the UK. Knowing how does Japanese knotweed spread is key for property owners, developers and anyone with Japanese knotweed on their land. This guide explains the […]

Japanese Knotweed Damage: Property Risks and Impact

Japanese Knotweed canes breaking through bricks

Japanese knotweed damage is a serious threat to UK properties. This invasive plant can cause significant structural damage and reduce property values by up to 20%* – figures that should worry any property owner. *See this survey by RICS. It’s growth pattern can be devastating to structures and other plants. It can grow through concrete, […]

The Anti-Social Behaviour, Crime and Policing Act 2014 and Japanese Knotweed

The Japanese Knotweed Problem and its Legal Consequences Looking for the full overview? See our Japanese Knotweed UK Law guide. Japanese knotweed (Fallopia japonica) is one of the UK’s most invasive plant species. Its rampant growth, ability to damage buildings and infrastructure and resistance to treatment have made it a nightmare for property owners across […]

The Town & Country Planning Act 1974 and Japanese Knotweed

The Growing Problem in British Gardens Looking for the full overview? See our Japanese Knotweed UK Law guide. Japanese knotweed (Fallopia japonica) is infamous as one of the UK’s most unwanted invasive species. With its incredible growth rate and ability to damage buildings and infrastructure, knotweed is a nightmare for property owners across Britain. Understanding […]

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