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Reynoutria japonica in bloom

Japanese knotweed ((Fallopia japonica)) was introduced to Britain in the 19th century as an ornamental plant, and won a gold medal at a prestigious flower show under its previous name of (Polygonum cuspidatum). However, once planted, this knotweed spread and refused to go away. Beyond the Far East, its homeland, Japanese knotweed has no natural biological enemies to check its spread. On the other hand, in Japan, at least 30 species of insect and 6 species of fungi live on the plant and restrict its spread. In 2004, a UK government review of non-native species stated the costs involved in eradication would be at least GBP1.56bn. Some other ecology-related photographs: .

Fallopia japonica or Japanese knotweed. Branch with green leaves and white flowers

Wild flower in the field

Japanese Knotweed growing exclusively by the side of a local river. Close-up and well focussed.

Blue Japanese Knã¶terich, Perennials (Fallopia japonica, syn. Reynoutria japonica)

Blossoms of the Japanese Knotweed (Fallopia japonica), an invasive plant species in Europe.

Close-up of Japanese knotweed (Fallopia japonica) with clusters of small white flowers and broad green leaves, highlighting its growth and texture. Known as an invasive plant in many regions.

A clump of Japanese Knotweed, Fallopia japonica, aka Reynoutria japonica, aka Polygonum cuspidatum ,a plant species which is extremely invasive in the UK.

Japanese Knotweed

just a photo of nature

Plant growing wild in the Netherlands

Blooming Giant Knotweed plant on a black background

Shot of white blossoming small flowers. Koenigia Alpina.

Blooming young green leaf on a tree branch with blurry background macro shot spring

A dense patch of green forest vegetation is softly illuminated by beams of sunlight, highlighting the translucent texture of the leaves. The interplay of light and shadow creates a tranquil and immersive natural atmosphere.

Freshly growing clump of invasive Japanese Knotweed in early Spring.

japanese knotweed flowering, invasive weed ,classified as controlled waste under the Environmental Protection Act 1990, it grows from tiny fragments of rhizomes the underground network of stems and roots , it spreads easily and can work it's way through concrete and tarmac , its roots can go down up to 3m deep. Here in the UK the having this weed in your garden can lower the value of your house by several thousands.

Inflorescences of the weed plant Reynoutria japonica in the summer forest. Invasive species in Germany

Japanese Knotwood in Spring before flowering. Japanese Knotwood is extremely invasive and very difficult to eradicate.

Plant growing in a garden in Germany

chinese medicine plant Achyranthes aspera L. in outdoor in Spring

Reynoutria japonica or Japanese knotweed along the river Hollandsche IJssel as an invasive exotic weed in the Netherlands

A dense cluster of Japanese knotweed leaves illuminated by natural sunlight, standing out against a dark forest background. The vivid green tones and heart-shaped foliage create a striking contrast and highlight the plant’s invasive nature.

Autumn flowering of a tree in an alpine forest

A clump of Japanese Knotweed (Reynoutria japonica, aka Fallopia japonica, aka Polygonum cuspidatum), a highly invasive plant, growing at the side of the coastal road through Craighouse, Isle of Jura, Scotland.

Japanese knotweed branch with flower buds - Latin name - Fallopia japonica

Japanese Knotweed plant is very invasive and difficult to eradicate.

chinese medicine plant Glochidion puberum (L.) Hutch in outdoor in Spring

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