Leaves are alternately arranged along stems, like knotweed. It has distinct rings on its stems just like Knotweed but the Knotweed stems have a distinct purple speck through them. Japanese knotweed spreads primarily by seed (transported by wind, water, animals, humans, or as a soil contaminant), stem fragments, and by shoots sprouting from its system of rhizomes. Russian vine is perhaps the most similar to Japanese knotweed in purely biological terms. It is the same genus and can even pollinate the female Japanese knotweed (though this rarely results in a viable hybrid). Knotweed species resemble each other, Japanese knotweed is shorter than Bohemian knotweed or giant knotweed. Do you have a plant lingering in your garden that you suspect could be Japanese Knotweed? Thank you...one of our team members will be in touch. Therefore, they are usually located in planted borders and areas of landscaping. What is Japanese knotweed? There are also links to other sources of useful guidance. It is important to differentiate Japanese knotweed from other look-alike plants. Bindweed cannot stand up by itself and needs to bind itself around other plants (hence the name). Maxing out at around 30cm, Houttuynia pales in significance when compared to fully grown Japanese knotweed at around 3 metres. Contact Wise Knotweed Solutions. It is a climbing plant that grows by twisting around the erect stems of other plants. Japanese knotweed is an upright, shrublike, herbaceous perennial that can grow to over 10 feet in height. Reduction in plant growth and vigour will be evident from year one, however it will take 5+ years to control the plant. Bamboo stems are tougher than Knotweed and the leaves are thinner. So it will come as no surprise that a lot of the time the plants worrying people are not knotweed at all, and a lot of the time they are often quite common benign plants that are no cause for concern. Stems are reddish-brown, smooth, stout, hollow and swollen at the join where the leaf meets the stem. Like many woody shrubs and trees Dogwood and Lilac are plants that look like Japanese Knotweed as the leaves are very similar. Yes! Japanese Knotweed can be the stuff of nightmares for developers and home owners alike. Everything you wanted to know about Japanese Knotweed but were too afraid to ask. We have used Phlorum on many jobs to eradicate Japanese knotweed successfully. They are also mostly hollow and can be snapped relatively easily. Common Name(s): Fleeceflower, Huzhang, Japanese bamboo, Japanese knotweed, Mexican bamboo Medically reviewed by Drugs.com. Prepare to distinguish Japanese knotweed from similar plants, such as: Giant knotweed plants are much taller than Japanese knotweed and have significantly larger, thinner leaves with heart-shaped bases. This article covers what plants look like Japanese Knotweed. The plant develops small winged fruits Seeds: triangular, shiny, very small, about 1/10 inch (2.5 mm) long. There are dozens of ways to eat Japanese knotweed, and I’ve included links to over 30 recipes at the end of this post. If you still think that you might have Japanese knotweed then our expert consultants can identify it for you for free! Some varieties and species of ornamental bistort have dark, triangular, arrow-shaped blotches across the central midribs of the leaves. Although this plant does not look like Japanese knotweed it is common in gardens and is frequently misidentified. lilac, dogwood and poplar). A guide to the identification of Japanese Knotweed and it’s yummy, non-invasive look-alike Rhubarb: Stems of Japanese Knotweed look very similar to rhubarb, the leaves however are very different with many leaves along each stem as can be seen below. Giant knotweed is much larger and can be distinguished by examining the leaves. Japanese knotweed leaves are more ovate than the native Persicaria and the pink flowers are clustered in a ball. Russian vine (or Bukhara fleeceflower) is in the same genus (. Not sure if you have a Knotweed problem? If you do happen to have Japanese knotweed then we offer a Japanese knotweed removal service, so get in touch with us today to start your consultation. The easiest way to tell the two plants apart is by fruits, or lack thereof. (click on images to enlarge). It would be difficult to mistake Bamboo for Japanese Knotweed. Japanese knotweed (Reynoutria japonica / Fallopia japonica) can also hybridise with its related species. Based near London, we are in the ideal spot to help remove dangerous Knotweed in Surrey, as well as areas across Kent. However, unlike Japanese knotweed, bamboo shoots are hard and cannot easily be snapped and the leaves are very slender and long. If you need help with plant identification, please contact your county noxious weed coordinator . It and many other ornamental bistorts have leaves and stems that are very similar to knotweed species, and when not in flower they can easily be mistaken for them. This article covers what plants look like Japanese Knotweed. Giant knotweed is also considered invasive in Connecticut. For a start, the flowers are red, not white. Look-alikes Japanese knotweed resembles giant knotweed (Polygonum sachalinense, Fallopia sachalinensis), but giant knotweed is larger, has greenish flowers and heart-shaped leaves. Japanese knotweed identification is not always easy, but if a potential infestation is ignored, there could be destructive and costly legal consequences.The following video provides some simple advice on what to look out for. Because of the fast-growing nature of the plant, it can cause great damage to … The biggest give away that these plants are not knotweed are the stems. Japanese Knotweed can be the stuff of nightmares for developers and home owners alike. 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