If we had our way, we’d nuke knotweed and launch it into deep space -- but it would probably survive.

Back on Earth, we suggest bagging it in thick contractor bags and taking it to a dump, landfill, or other location that is licensed to accept it. According to the Environmental Protection Act, Knotweed is classified as “controlled waste” so research specific disposal guidance in your area. In some areas, knotweed and other invasive plants require specific handling due to their environmental danger.

Crowns and rhizomes can also be burned or buried. However, burning knotweed requires extremely high temperatures so we don’t recommended it at home. If you bury it, it should be at least five feet deep… this makes us sweat just thinking about it.

Absolutely do not pile cut knotweed near wetlands or other surface waters. Also, don’t throw it into a leaf pile, over your fence, or anywhere else where it might propagate. It will. Some people report that composting dry dead stalks is possible, but we don’t take the chance. Absolutely do not compost rhizomes or crowns.

Remember that a shred of rhizome can lead to more knotweed. It drives us crazy when we see removed knotweed just piled on the side of the road or along a neighbor’s fence. This will likely prolong the existing issue and create a similar nightmare for the rest of the neighborhood. All it takes is one car, truck, snowplow, or boot to carry a rhizome to a new location to torment more souls.