John Kelly Photography(UK) tm

GALLERY-Plants, Japanese Knotweed Photo Gallery

Information and photos - This plants photo gallery features stock photos of Japanese Knotweed (Fallopia japonica). A large herbaceous perennial plant, native to eastern Asia, Japan, China and Korea. This invasive non-native plant species is spreading rapidly thorough the UK, including England Wales Ireland and Scotland. Surprisingly it's even found in North East Scotland and if it hasn't already done so will likely spread further north. It will grow almost anywhere and particularly likes moist soils this leads to it being very common along riverbanks, spreading vigorously through river courses and catchment areas. These stock photos show the full plant; the leaf; the leaf stem; main stem; and stalk detail. The information and photos could be useful for field based health and safety risk assesments.

>Go straight to the Japanese Knotweed stock photos---> Stock photo gallery of Japanese Knotweed plant (Fallopia japonica), an aggressive invasive non-native species classed as a weed or superweed.  www.jakphoto.co.uk, John Kelly Photography (UK)

Japanese knotweed (Fallopia japonica) is also known as "fleeceflower", "Hancock's curse", "Elephant ears", "Donkey rhubarb", "Sally Rhubarb", "Huzhang" (Chinese), "Japanese bamboo", "American bamboo", and "Mexican bamboo" The Japanese name is "itadori". (The plant looks similar to Bamboo and Rhubarb but it is not related to either Bamboo or Rhubarb).

Japanese Knotweed is a member of the family Polygonaceae, it has hollow stems with distinct raised nodes that give it the appearance of bamboo. While the stems may reach a height of over 3 metres, smaller plants can be seen sprouting where seeds have fallen. The plant grows freely on waste ground, but because of it's invasive nature it can be found almost anywhere, the plant will force itself through thin or weak coverings of tar (tarmacadam) & concrete and expand cracks in pavements. It is particularly prevalent in river courses, along riverbanks and railway lines. Japanese Knotweed is an oriental plant that was introduced to ornamental gardens and has since spread and naturalised (naturalized) in the UK. Although it provides good cover for some species it can become impenetrable and this non-native plant species is classed as an aggressive weed, nuisance weed, superweed by environmental land managers, county councils, country estate managers, factors and land owners.

According to the Wildlife and Countryside Act Spreading Japanese Knotweed is illegal. The act states that it is an offence under section 14(2) of the Wildlife and Countryside Act 1981 to "plant or otherwise cause to grow in the wild" any plant listed in Schedule 9, Part II of the act.
Ref: Defra, Scottish Executive Environment, Wildflower Society

As it grows Japanese Knotweed forms dense stands of stems that become impenetrable by other plants once well-established. The rapid growth of new shoots and leaves in the spring shades out any vegetation below, suppressing the growth of other plants, including established native species. This non-native invader can cause monocultures to form. Japanese knotweed invasions contribute to reductions in native bio-diversity. This introduced species is harmful to the ecosystem damaging the ecology of sensitive, protected environmental areas taking over precious ecosystem habitat. When the plant infests towns and cities it causes considerable damage to the infrastructure and can take over open ground this leads to high financial costs being spent to eradicate it.

These stock pictures show Japanese Knotweed leaves that are broad pointed teardrop oval shape with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. The flowers are small, creamy white, produced in the later part of summer and early autumn. The Japanese Knotweed plant is sometimes confused with Sorrel. Closely related species include giant knotweed (Fallopia sachalinensis, syn. Polygonum sachalinense) and Russian vine (Fallopia baldschuanica, syn. Polygonum aubertii, Polygonum baldschuanicum).

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Caryophyllales
Family: Polygonaceae
Genus: Fallopia
Species: F. japonica

Tthe stock images shown in this plants photo gallery they are available for purchase in various formats and media. If you would like to use any of them please contact me for more information.

Some stock photos of Japanese Knotweed can be found below...  Plants, Japanese Knotweed Photo Gallery


'Japanese Knotweed Plant leaf macro abstract  (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop leads  to a sharp point at the end of the leaf. This abstract image shows the underside texture and pattern of a Japanese Knotweed leaf. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf Membraine Macro
Abstract (Dscf6110)
 
'Japanese Knotweed Plant leaf abstract  (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop leads  to a sharp point at the end of the leaf. This abstract image shows the underside texture and pattern of a Japanese Knotweed leaf. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf abstract (Dscf6114)
 
'Japanese Knotweed Plant leaf abstract  (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop leads  to a sharp point at the end of the leaf. This abstract photo shows the upper texture and pattern of a Japanese Knotweed leaf. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf abstract (07-4569)
 
'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a young Japanese Knotweed leaf. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf (07-4564)




'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a mature Japanese Knotweed leaf. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf (07-4574)
 
'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a young Japanese Knotweed leaf and part of the stem. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf (07-4651)
 
'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a lower canopy Japanese Knotweed leaf, part of the stem and the plants main stem. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf stalk and stem (07-4592)
 
'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a lower canopy Japanese Knotweed leaf, part of the stem and the plants main stem. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf stalk and stem (07-4598)




'Japanese Knotweed leaves are broad pointed teardrop oval shape with with a truncated base, the broad leaf teardrop shape leads to a sharp point at the end of the leaf. This image shows the full leaf upper texture and leaf pattern of a lower canopy Japanese Knotweed leaf, part of the stem and the plants main stem. Same leaf as 07-4592 but taken in portrait orientation to show more of the main stem. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf stalk and stem (07-4602)
 
Japanese Knotweed plant, (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Main stems form dense impenetrable stands of stems or stalks. This image shows the main stems as the come out of the ground. The new growth stems are green in colour with red vertical spot like dash shape and form a mottled pattern somtimes the stems are more red than green due to the density of the marks, www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main Stems (07-4604)
 
Japanese Knotweed plant, (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Main stems form dense impenetrable stands of stems or stalks. This image shows the main stems as the come out of the ground. The new growth stems are green in colour with red vertical spot like dash shape and form a mottled pattern somtimes the stems are more red than green due to the density of the marks, www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main Stems (07-4640)
 
Japanese Knotweed plant, (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Main stems form dense impenetrable stands of stems or stalks. This image shows the main stems as the come out of the ground. The new growth stems are green in colour with red vertical spot like dash shape and form a mottled pattern somtimes the stems are more red than green due to the density of the marks, www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main Stems (07-4641)





Japanese Knotweed plant, (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). Main stems form dense impenetrable stands of stems or stalks. This image shows the main stems as the come out of the ground. The new growth stems are green in colour with red vertical spot like dash shape and form a mottled pattern somtimes the stems are more red than green due to the density of the marks, www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main Stems (07-4639)
 
Japanese Knotweed plant leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a selection of leaves. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaves (07-4609)
 
Japanese Knotweed plant leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a selection of leaves on a stem protruding from the main stand of stems. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaves (07-4558)
 
Japanese Knotweed plant leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a 3 metre wide section of Japanese Knotweed leaves protruding from the dense stands formed by the plant. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaves Detail (07-4540)




Japanese Knotweed plant (Fallopia japonica, syn. Polygonum cuspidatum, Reynoutria japonica). The main stems form a dense impenetrable barrier. This image shows the main stems at the base of the plant as the come out of the ground. The new growth has almost hidden the stems with dense leaf cover. This image shows about two feet of growth.  www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main Stems (07-4511)
 
Japanese Knotweed plant section. This image shows a 2 metre tall section of Japanese Knotweed protruding from the ground forming dense inpenetrable jungle like barrier. The stand of stems is about 1 metre wide. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Section (07-4476)
 
Japanese Knotweed full plant. This image shows a 3 metre tall section of Japanese Knotweed leaves protruding from the ground forming dense inpenetrable jungle like cover. The stand of stems is about 2 metres wide. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Full Plant
(07-4477)
 
Japanese Knotweed plant leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a selection of leaves. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaves (07-4608)




Japanese Knotweed habitat showing three full plants approximatly 2 metres in height. The knotweed stands are growing in a gravel riverbed, scale is given by the tall mature willow to the left of the frame. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Habitat
(07-4717)
 
Japanese Knotweed habitat showing a full plant approximatly 2 metres in height. The knotweed stand is growing in a gravel riverbed, scale is given by the tall mature willow to the left of the frame. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Habitat
(07-4718)
 
Japanese Knotweed Plant Leaf Comparison with Willow. Plant identification, Japanese Knotweed  leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a half metre wide selection of leaves on the right with similar sized selection of Willow leaves on the left. The plants were pictured growing side by side. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf Comparison with Willow
(07-4720)
 
Japanese Knotweed Plant Leaf Comparison with Willow. Plant identification, Japanese Knotweed  leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a one foot wide selection of Japanese Knotweed leaves on the right with similar sized selection of Willow leaves on the left. The plants were pictured growing side by side. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf Comparison with Willow
(07-4721)




Japanese Knotweed Plant Leaf Comparison with Willow. Plant identification, Japanese Knotweed  leaves are broad pointed teardrop oval shape with with a truncated base. On mature plants they form dense jungle like cover. This image shows a metre wide selection of leaves on the right with similar sized selection of Willow leaves on the left. The plants were pictured growing side by side. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf Comparison with Willow
(07-4719)
 
A closeup of three baby Japanese Knotweed plants sprout out of the dried up gravel riverbed. The plants have red stalks and stems, yellowish green leaves with tinges of rusty red colours. Pictured with a  grassey background. www.jakphoto.co.uk, John Kelly Photography (UK)
Three Baby Japanese Knotweed Plants Closeup (07-4699)
 
Three baby Japanese Knotweed plants sprout out of the dried up gravel riverbed. The plants have red stalks and stems, yellowish green leaves with tinges of rusty red colours. Pictured with a  grassey background. This image has more background space than image 07-4699. www.jakphoto.co.uk, John Kelly Photography (UK)
Three Baby Japanese Knotweed Plants (07-4709)
 
Three baby Japanese Knotweed plants sprout out of the dried up gravel riverbed. The plants have red stalks and stems, yellowish green leaves with tinges of rusty red colours. Pictured from above. www.jakphoto.co.uk, John Kelly Photography (UK)
Three Baby Japanese Knotweed Plants from above (07-4714)




Three baby Japanese Knotweed plants sprout out of the dried up gravel riverbed. The plants have red stalks and stems, yellowish green leaves with tinges of rusty red colours. Pictured from above. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Leaf Comparison with Willow
(07-4715)
 
Three baby Japanese Knotweed plants sprout out of the dried up gravel riverbed. The plants have red stalks and stems, yellowish green leaves with tinges of rusty red colours. Pictured with a  grassey background. This image has more background space than image 07-4699. www.jakphoto.co.uk, John Kelly Photography (UK)
Three Baby Japanese Knotweed Plants and Habitat(07-4710)
 
Japanese Knotweed plants and habitat. This image shows foilage from a plant that is close to the camera with out of focus stands of Japanese Knotweed plants behind, blurred, slightly out of focus. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plants
and Habitat (07-4657)
 
Japanese Knotweed plants and habitat. This image shows foilage from a plant that is close to the camera with out of focus stands of Japanese Knotweed plants behind, blurred, slightly out of focus. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plants
and Habitat (07-4661)

 

 

           
Japanese Knotweed isolated on a gravel spit. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
isolated on a gravel spit
background (07-4738)
 
Japanese Knotweed isolated on a gravel spit. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
isolated on a gravel spit
background (07-4737)
 
Japanese Knotweed Plant uprooted, a photo showing old withered main stalks at the plant base, roots and new growth emerging from the dried out rootball. Guessing that this mature plant was uprooted in the late summer of the previous growing year.  www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main stalk / stem (07-4614)
 
Japanese Knotweed Plant uprooted, a photo showing old withered main stalks at the plant base, roots and new growth emerging from the dried out rootball. Guessing that this mature plant was uprooted in the late summer of the previous growing year. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main stalk / stem (07-4615)




Japanese Knotweed Plant red stalk/stem detail. A closeup macro. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Red stalk/stem (07-4577)
 
Japanese Knotweed Plant red stalk/stem detail. A closeup diagonal macro. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Red stalk/stem (07-4578)
 
Japanese Knotweed Plant main stalk/stem detail. A closeup macro. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main stalk / stem (07-4584)
 
Japanese Knotweed Plant main stalk/stem detail. A closeup diagonal macro. www.jakphoto.co.uk, John Kelly Photography (UK)
Japanese Knotweed Plant
Main stalk / stem (07-4585)




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