What Is The Most Effective Method For Japanese Knotweed Removal?

If you have ever attempted Japanese knotweed removal, you are probably well aware that this antagonist weed that is on your lawn is not an ordinary weed. This weed is scary enough on its own, but if you do not know the best way to rid your yard of it, it can become a landscaping nightmare. Fortunately, there are some removal methods that are not well known by most homeowners.

Japanese Knotweed Removal

What Is Japanese Knotweed?
This a non-native, invasive plant species that has quickly become threats to communities all over the country. This plant (scientific name Polygonum cuspidatum) is a rapidly growing plant species that quickly shades out native plants. Japanese knotweed can be seen along the sides of the roads, recreational areas and lawns.

As it grows closer to our streams and creeks, it becomes an even greater threat to the native ecosystem. This also increases the fire danger in these areas. Although the stems above ground appear intimidating, the weed’s real danger lies in the underground rhizome that can grow quickly and occupy new areas.

In order for Japanese knotweed removal to be effective, the approach must use more than one method and occurs in several attacks.

Cutting
The first thing most homeowners want to do once they spot this plant on their lawn is to cut it. However, cutting will only remove the portion of the plant that is above ground.

Cutting will only further stimulate the underground rhizome and it will spread to other areas. There are some cases where if the area is mowed often enough, the reserves of the plant will eventually dry up.

The best way to remove the plant from your yard is to combine the cutting method with the use of herbicide. It is recommended that the area is treated twice a year. Once during late spring and early, with the other treatment time right before fall. If the Japanese knotweed population on your lawn is well established, it may take several years before the plant is killed.

Fortunately, the plant will not resprout once the cane is cut, but the area can become reinfested if the cut canes are removed.

Glyphosate
This is an herbicide that is non-restrictive. It can be purchased and used by anyone. The herbicide is included in brand named herbicides like ‘Round Up’. However, this does not mean that the user is not at risk when using this herbicide.

It should always be used properly and as directed on the label. It should never be used near or in water, and any residue from the herbicide should not enter public waters including residential and commercial drains.

When you wear gloves, you will be able to safely dispose of it in the trash. Any contaminated clothing used during the application of the herbicide should be either disposed of or washed separately from other clothing.

Japanese knotweed is tenacious, so you must be prepared to continue your two-pronged attack for months, if not years. Japanese knotweed removal is possible, but you will have to be persistent in your efforts.