HOW TO: REMOVE JAPANESE KNOTWEED
Japanese Knotweed is a horticultural horror story. This aggressive plant boasts a menacing growth rate, with roots burrowing deep underground – sometimes up to 3 metres down. It also spreads horizontally in any direction and can spread far. Its relentless strength can even shatter concrete, foundations, and patios – no barrier is safe from its invasion.
If you discover Japanese Knotweed on your property, it’s essential that you don’t delay. The longer it lingers, the greater the potential damage. This invasive weed can infiltrate your home’s foundations, walls, and floors, leading to expensive repairs.
Gardening and plant expert Harry Bodell at PriceYourJob.co.uk has created this guide on how to deal with this invasive plant. If you have found Japanese Knotweed on your property, read on to find out what you need to do next.
What to Do If You Find Japanese Knotweed at Your Property
Due to the ease with which Japanese Knotweed spreads and its destructive nature, tackling it yourself can be tricky. Complete eradication is essential to prevent regrowth, and removing the extensive root system often requires a mechanical digger.
Also, disposing of the plant and any contaminated soil is strictly regulated. Since Japanese Knotweed is classified as controlled waste in the UK, it must be taken to a designated landfill site. Consulting an expert ensures proper removal, disposal, and minimizes the risk of the weed returning.
Herbicide Treatment: An Option for Homeowners
If you decide to tackle Japanese Knotweed yourself, herbicide treatment is an option. Here’s a breakdown of the steps involved:
Plan Meticulously: Before diving in, assess the surrounding area. Are there nearby schools, playgrounds, or water sources that could be affected by herbicide overspray? Inform your neighbours about the treatment schedule to minimize exposure risks. Choose a late spring or early autumn window when the plant is actively growing.
Safety First: Don’t underestimate the importance of proper safety gear. Wear overalls, a safety mask, gloves, and a face shield for protection. Sheets, tarpaulins, and rubble sacks will also come in handy.
Weather Matters: Choose a dry day with no rain forecast, as most herbicides can harm desired plants as well. Avoid windy conditions if using a spray application.
Targeted Application: A garden sprayer is effective for applying herbicide, but use caution near water sources or sensitive areas. Alternatively, a roller, cloth, sponge, or brush can be used for localized application. Remember to wear gloves and shield nearby plants with tarpaulins. The herbicide should thoroughly cover the leaves and stems. For enhanced effectiveness, inject some herbicide directly into the stems near the base. Specialized tools are available for professionals, but a simple cut at the base followed by pouring herbicide into the opening can suffice.
Careful Disposal: Once cut, place all Knotweed material in sturdy plastic rubble sacks. Remember, this is hazardous waste and requires disposal at a designated landfill site. Check with your local council to see if they offer any collection services for Japanese Knotweed.
Persistence is Key: Eradicating Japanese Knotweed is a long-term battle, not a quick fix. A single treatment won’t do the trick. Be prepared to repeat the process 2-3 times a year for several years (3-5) until the weed is completely eradicated and shows no signs of regrowth.
Final Thoughts
Considering the difficulty of removal, disposal regulations, and the importance of complete eradication, consulting a professional for Japanese Knotweed removal is the wisest course of action. Their expertise can save you time and money, as well as the potential headache of regrowth. If you have noticed Japanese Knotweed around your property, make sure to act now to prevent any further potential damage.