how to identify japanese knotweed


Can you spot a lisianthus from a gardenia or tell a rose from a Persian buttercup? If you answered “no” to either of those questions, don’t worry – you’re not alone!

The world of gardening and the great outdoors can be a tad overwhelming for anyone who doesn’t have green fingers or the encyclopaedic knowledge of Alan Titchmarsh.

As such, knowing how to identify Japanese knotweed can be a tough task for an average Joe; however, that’s not to say it’s impossible…


Identifying Japanese Knotweed

Depending on the time of year, Japanese knotweed can sport many different looks. Nevertheless, regardless of its seasonal stylings, no floral fashion statement will change the fact that this Oriental irritant is still a botanical pain in the butt – especially when its within striking distance of your property.

So, how do we spot Japanese knotweed and stop it from worming its way into your home? Let’s find out.


Japanese Knotweed in Spring

During the spring, Japanese knotweed begins to make its presence known. Typically starting in mid-March, red and purple shoots will begin to appear and quickly bear rapidly growing leaves.


Japanese Knotweed in Summer

In the height of the summer, Japanese knotweed is in full swing. Bright and full, it appears green and leafy above ground, boasting creamy-white flowery clusters and purple-speckled stems.


Japanese Knotweed in Autumn

As the lush green of the summer turns to autumnal auburn, Japanese knotweed follows suit. Its leaves will turn a yellowy gold, while the stem will fade to a darker brown.


Japanese Knotweed in Winter

As temperatures drop, the wintertime design of Japanese knotweed becomes far less colourful. Brown and bare, the weed retreats back to its rooty rhizomes, leaving behind its woody stalks.


Plants that look like Japanese knotweed

To add further confusion to the situation, there are a number of other plants that strongly resemble Japanese knotweed. Featuring striking similarities, the list of leafy doubles is frustratingly long and can range from Russian Vine and Himalayan Honeysuckle to bamboo and lilac shrubs.

For more information on Japanese knotweed lookalikes, check out our “Plants That Look Like Japanese Knotweed” blog.


Professional Japanese Knotweed Identification

If you suspect you may have an infestation of Japanese knotweed on your property (or in a neighbouring property close by), perhaps the best course of action for peace of mind is to have a professional check it out for you.

At Taylor Weed Control, our team of experts are fully qualified to instantly recognise and treat any Japanese knotweed found on your property. With over 15 years of experience, we can nip it in the bud – LITERALLY – and keep your home safe, structurally sound and knotweed-free.

So, what are you waiting for? Give Taylor Weed Control a call today on 02920397554 or enquire online for a free survey and let us tie up your knotweed woes in a nice, neat bow.

Enquire Now!