What should you not do with Knotweed?

Introduction to Knotweed

Japanese Knotweed, often called Knotweed, is an invasive plant species that can wreak havoc on your property and the environment if not managed properly. If you’ve come across this plant, how should you deal with it? More importantly, what should you avoid doing?

Common Mistakes with Knotweed Management

Let’s dive into common mistakes people make when managing and eliminating Knotweed from their properties.

Cutting or Mowing

One might think, “Why not just mow it down like regular grass or weeds?” Cutting or mowing Knotweed can make the situation worse. This plant regenerates and spreads through its rhizomes (root system), so cutting it will stimulate more growth, making your knotweed problem even more prominent.

Dumping Knotweed Remnants

After cutting or uprooting, some people make the mistake of dumping knotweed remnants elsewhere. Even tiny fragments can regenerate into full-grown plants. By dumping them, you’re only spreading the problem to new areas.

Using Harmful Chemicals

Desperation can lead some to use powerful chemicals to destroy Knotweed. Not only can these chemicals harm the environment, but they also might not be effective against this resilient plant.

Ignoring Small Growth

Have you spotted a tiny sprig of Knotweed? Please don’t ignore it! Even small growths can quickly become full-blown infestations if left unchecked.

The Impact of Mishandling Knotweed

So, what happens if you make these mistakes?

Environmental Consequences

Knotweed can take over native plants, affecting local biodiversity. Moreover, its deep and aggressive roots can cause soil erosion, impacting local waterways.

Structural Damage

Knotweed’s roots are so powerful that they can cause damage to building foundations, roads, and other structures, leading to costly repairs.

Legal Implications

In many areas, the improper disposal or handling of Knotweed can land you in legal trouble, including potential fines. It’s essential to be aware of local regulations.

Practical Alternatives to Manage Knotweed

Instead of these common mistakes, consider these more effective alternatives.

Professional Removal

Enlisting the help of professionals can ensure that Knotweed is removed correctly without the risk of further spreading or damage.

Organic Methods

Organic herbicides and natural barriers can help manage Knotweed without harming the environment.

Regular Monitoring

Regularly checking your property can help you catch and address small growths before they become significant issues.


While a formidable foe, Japanese Knotweed can be Killed with the proper knowledge and strategies. Avoid common mistakes, stay informed, and consider seeking professional help if the situation becomes overwhelming.


  1. Is Knotweed harmful to humans?
  2. Knotweed isn’t harmful when touched, but its rapid growth can cause problems for your property and environment.
  3. Can I burn Knotweed?
  4. While burning might seem like a solution, it doesn’t destroy the underground rhizomes, which can lead to regrowth.
  5. How long does it take for Knotweed to die naturally?
  6. Knotweed is resilient, and without intervention, it can persist for years.
  7. Is there any benefit to having Knotweed on my property?
  8. While some cultures use Knotweed for medicinal or culinary purposes, its aggressive growth usually outweighs potential benefits.
  9. Are there any natural predators of Knotweed?
  10. Certain insects, like the knotweed psyllid, feed on Knotweed, but they’re not always effective in controlling its spread.

Contact Stephen if you think you may Have Japanese Knotweed on 07753682333