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Learn how to identify Japanese Knotweed in order to stop it from spreading.
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CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESE KNOTWEED SPRING/SUMMERSPRING
SUMMERER
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESE KNOTWEED AUTUMN/WINTERAUTUMN
WINTER
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
IF YOU THINK YOU HAVE DISCOVERED JAPANESE KNOTWEED ON OR NEAR YOUR PROPERTY:
JAPANESE KNOTWEED LIFE CYCLE
April May June July August September October November December January FebruaryMarch
2m
1.75m
1.25m
0.75m
0.25m
1.5m
1m
0.5m
0m
2.5m
2.25m
2m
1.75m
1.25m
0.75m
0.25m
1.5m
1m
0.5m
0m
2.5m
2.25m
Red shoots
Formed fromred bud
Red stemslighter shades
Yellowishshoots
Alternatingleeaves
Archingstems
Hollowstem
Smootthlight colouredbrittle canees
Red budds
Brown outeer skinon stem peels
mains Remflowers of fl
Flowers
Speckledsttem
DO know what Japanese knotweed looks like! Being able to identify it in all seasons will help you remain vigilant and spot potential infestations on your property quickly.
DO restrict access to the affected area; even small infestations can spread rapidly if disturbed!
DO respect the environment! Chemicals used to control Japanese knotweed can be harmful so unless you’re qualified to use herbicides then leave it to the experts!
DON’T damage! Fragments of Japanese knotweed stem material can create new shoots and roots, further spread-ing the infestation.
DON’T uproot! Disturbing the ground were Japanese knotweed is growing can expose the plants underground rhizomes. Tiny fragments of this material weighing as little as 0.7g can easily be carried on clothing, footwear and tools to later fall and generate new Japanese knotweed growth.
DON’T add to compost! All cut Japanese knotweed must be separately stockpiled to ensure the material is completely dead before applied to land.
DON’T dump! Japanese knotweed is classed as controlled waste and must be disposed of at authorised facilities. It is illegal to allow Japanese knotweed to spread in the wild and if disposed of incorrectly you may be liable to prosecu-tion under the Wildlife and Countryside Act 1981.
DON’T delay! Every day that passes without taking action or carrying out effective methods of control, Japanese knotweed becomes better established and harder to eliminate. Contact Invasive Weeds Agency Ltd and we will be able to give you clear and practical advice to success-fully rid your property of Japanese knotweed!
WINTER
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
CALL IWA NOW ON 0845 676 9252THINK YOU HAVE A JAPANESE KNOTWEED PROBLEM?
00884455 667766 99225522IWA. Getting to the root of the problem.
JAPANESEKNOTWEED
3m
2.75m
2.5m
2.25m
2m
1.75m
1.5m
1.25m
SpeciesHeight
Leaves
FlowerSeeds
Fallopia japonicaTo 3mAlternate rounded triangular to sharp pointUp to 200mm longCreamy white in loose, branched spikesTo 5mm heart shaped winged (sterile)
WHAT DOES IT LOOK LIKE?
WHAT IS IT?Japanese knotweed is one of the most invasive plants in the UK. It grows rapidly (over 1.5m in a month) and spreads easily by stem fragments and rhizomes (underground creeping stems).
WHAT DAMAGE DOES IT CAUSE?It can damage buildings, structures and roads. It can block drains and waterways leading to flood damage. It reduces biodiversity and dominates native plants. It prevents property sales, remortgaging and development until it is eradicated.
12
3
KEY FEATURES
Shield shape leaf
Creamy coloured flowers (late summer)
Zig Zag reddish stems, turning green lower down
1
2
3
