best time to treat japanese knotweed

While there's never a good time to find Japanese knotweed on your property, there is an optimum time to treat it if you want to make sure it stays out of your garden all year round. As with all weed removals, timing is key if you want your removal processes to have maximum effect. Treating weeds like Japanese knotweed at the wrong time of year will make the removal process harder and will also put you at risk of spreading the infestation further around your garden. 

So, when is the best time to treat Japanese knotweed?

Although some people might argue that the best time to treat Japanese knotweed is in the spring/summer when it's growing most rapidly, we've found that the best time to treat Japanese knotweed with herbicides is in autumn. Here's why!

During autumn, the Japanese knotweed stops putting energy into growth and instead uses its energy to move sugars and nutrients down towards its underground rhizome structure. This is an important part of the plant's lifecycle because it ensures the plant will survive during the harsh winter months. 

We take advantage of this shift in energy and spray the Japanese knotweed with our specialist herbicides so that they will travel down with the natural flow of nutrients and penetrate deep underground to effectively treat the parts of the plant that you can't see!

Can I treat Japanese knotweed in spring/summer?

If you notice a developing Japanese knotweed problem, we'd always recommend getting a survey right away so that you can determine the right time and type of treatment for your specific case. Generally, we don't treat Japanese knotweed as much during the spring/summer months because the herbicides can be less effective. During this time, the Japanese knotweed is putting all of its available energy into pushing nutrients up to the leaves and flowers, so herbicide applications can kill off the top section of the weeds without really addressing the rhizomes underground. 

If you do need to treat Japanese knotweed during the warmer months, we'd probably recommend choosing a more aggressive form of treatment like excavation. This is much more likely to remove the Japanese knotweed above and below ground. 

What are my Japanese knotweed treatment options?

When it comes to treating Japanese knotweed, there are quite a few different options to choose from. Here at Taylor Total Weed Control, we offer a free no-obligation survey and a range of treatment plans to help you get your Japanese knotweed problem under control quickly. 

Our Japanese Knotweed Treatment Plans >

We hope that this shed some light on the best time to treat Japanese knotweed. If you have any questions at all, don't hesitate to get in touch with our team - 029 2039 7554.

new build property

The thought of buying your first home is exciting, we know, but we want to warn you of the potential for Japanese knotweed on new build plots. It has recently come to light that property developers have been taking advantage of a loophole in the Japanese knotweed regulations, which means knotweed has been cropping up on new build housing plots up and down the country. Let us explain...

More...

why can't you cut Japanese knotweed?

Over the past few weeks, we've been looking at lots of different ways to get rid of Japanese knotweed. So far, we've debunked the myth that covering knotweed is an effective way to remove it and we've even explored the effects of adding lime to your soil! Sadly, neither of these methods has been proven to be effective, Japanese knotweed is just too good at surviving! 

When it comes to effective methods of Japanese knotweed removal, excavation, specialist herbicide treatments and burning have all been quite effective. These aggressive methods of treatment are capable of stopping the knotweed in its tracks! So surely cutting it down has to be effective too, right? Today we're answering the question - why can't you cut Japanese knotweed?

More...

can you kill japanese knotweed with lime?

People are always on the lookout for inventive ways to deal with Japanese knotweed. In a previous blog, we looked at whether salt could dehydrate and eventually kill it off, but sadly, the answer was no. Professional herbicides were required to deal with this hardy invasive species! But can any other naturally occurring materials kill Japanese knotweed?

Today we're looking at a different substance to see whether or not it can do a better job. As you can see from the title, today we're looking at the weed-killing properties of lime. No, not the kind that's often sliced and served in a mojito, the kind that's found in the earth's crust as limestone, chalk and marble.

More...

Japanese knotweed distance from house

When it comes to Japanese knotweed, is there a distance away from your house that means it's okay? Are there circumstances where you should leave it alone? Let's find out!

More...

covering Japanese knotweed

Not all weeds are created equally, some need extra special attention. Unfortunately, Japanese knotweed is one of those 'special attention' weeds and if you find it on your property then it's vital that you deal with the problem quickly. There are lots of different approaches to eradicating Japanese knotweed, some are more drastic than others! Burning and backyard excavation can be quite intimidating to people, especially if the knotweed is located close to their homes or businesses, so people often seek alternatives.

One method of treating Japanese knotweed that doesn't require any digging or burning is covering it to choke it out. By depriving any living shoots of water and sunlight, they should die... right?

More...

If you have Japanese knotweed on your land, you're not obliged to destroy it, but it is your responsibility to ensure that this invasive weed doesn't spread to anybody else's property. Should the plant spread on your watch, you may find yourself liable from a legal standpoint.

So what happens when there's Japanese knotweed on land adjoining yours? Should you just sit back and relax, safe in the knowledge that you'll be entitled to compensation if the owner of the neighbouring plot allows their knotweed to encroach on your property?

Well, that's not what we recommend. Far better to take action now and make sure you're covered if the knotweed next door becomes your problem as well.

More...

best way to get rid of japanese knotweed

If you've found Japanese knotweed on your property it's important you get rid of it quickly and efficiently. Leaving it for weeks or months can have a detrimental impact on your property and can even lead to disputes with neighbours! Of course, there's more than one way to tackle Japanese knotweed and some ways are better than others. In today's blog, we take a look at the different methods of Japanese knotweed removal to find out what the best way to get rid of Japanese knotweed is. 

More...

Have you spotted Japanese knotweed on your property and are worried you may be breaking the law by doing so? Well, don't worry, because it IS NOT a criminal offence to have Japanese knotweed on your property.

More...

During the autumn months, the majority of weeds and plants begin to die out and wilt with Japanese knotweed being no different. If you believe you have an infestation of knotweed on or near your property but are unsure and need confirmation, read on to find out what Japanese knotweed looks like in the autumn.

Japanese knotweed in autumn

Photo by Kenneth Allen

Identifying Japanese knotweed in the autumn 

When trying to identify Japanese knotweed during the autumn, the signs that you should be looking out for are: 

  • A very dense cluster of bamboo stems with a lot of foliage 
  • Plants that are approximately 2-3 meters high 
  • Leaves that are starting to turn yellow and are wilting 
  • Hollow bamboo-like stems that are beginning to turn from a reddish-brown into a darker shade of brown 
  • Leaves will contain a distinctive zigzag pattern on the stems 
  • The leaves will also have a distinctive heart-shape with a pointed tip and straightened edge
  • During late autumn the canes will begin to die off and the plant becomes dormant

During the autumn months, Japanese knotweed will look similar to that in late summer, so shouldn't be too hard to identify. During these months, however, Japanese knotweed begins to flower where nearly all of the plant's resources are transferred to its rhizomes, causing it to grow significantly. This presents the optimal time to treat and reduce further rhizome growth.

 

Japanese knotweed treatment in autumn 

If you're interested in how we work to treat Japanese knotweed during the autumn, take a look at our handy infographic below!

Do you require more information on Japanese knotweed during the autumn? Please feel free to get in touch with the Taylor Total Weed Control team today by filling out the form below - we'd be more than happy to help you out!

Contact Taylor Weed Control

Name *
E-mail address *
Location *
Telephone Number *
Your Message
 
Security Character Security Character Security Character Security Character Security Character Security Character
Enter Letters (No Spaces) *
Security Character Security Character Security Character Security Character Security Character Security Character