Understand What You Are Dealing With
Do not do anything to the plant until you are positive that it is Japanese knotweed. This particular type of weed is more difficult to handle than other variations, so strategies you may have used in the past are unlikely to be successful.
The Japanese knotweed gets its name from its stem, which has “knot-like” notches in it. This weed likes the sun and returns each spring after going away in the winter. It avoids dry areas and can have very long roots, some as long as twenty feet deep. The leaves are in the shape of a heart and grow to be fairly big. The flower is a cream colour and is (at minimum) half a foot tall.
Use Proven Strategies
The Japanese knotweed grows quickly. It is important to engage in regular yard maintenance to ensure the plant does not take over the space. When considering how best to get rid of Japanese knotweed, think about the season. There are different strategies to employ if it is the summer versus the spring, for example. In addition, do not stop at one elimination strategy. Because this is a notoriously difficult weed, you may have to try several methods and devote quite a bit of time to the process. If that isn’t something you can do, consider bringing in a lawn expert to help. If you are having trouble getting of knotweed, there are companies that offer japanese knotweed identification and removal specialists in uk.
Try a Tarp in Spring
Japanese knotweed begins growing in the spring, which means that is an ideal time to kill the weed so it does not take over. First, cut the plant down as far as you can. Clear the area surrounding the plant so that there are no rocks, sticks, or other debris. Then, try using a tarp to cut off access to sunlight and air. It is always best to put down a few tarps so the entire area is covered. Make sure to place rocks on the tarp to ensure the tarp stays in position. The goal is to keep sunlight from reaching the plant.
In lieu of rocks, you can place any other heavy materials on the tarp, like bricks, as well. Make sure that all of the ends stay down. It is possible for the plant to start to sprout up again under the tarp. Walk on it periodically to keep this from happening. Ultimately, the Japanese knotweed must have sunlight to thrive, and without it, it will die.
Do not remove the tarps too quickly. This process can take a while, although it is extremely effective. Once you are certain that the plant has died, you can pick the tarps up again. If you don’t see results as quickly as you would like, you may want to combine your efforts with another strategy to help.
Chop It Down in Summer
Keep the plant from effectively engaging in photosynthesis by cutting it as closely to the ground as possible. Make sure to target the entire plant, including all leaves and stems. Put any clippings in the trash as soon as possible. Watch the plant and continue cutting it back as necessary throughout the summer.
Cutting down the Japanese knotweed helps to get rid of it, although this method will not work on its own. This strategy has to be combined with others.