Japanese knotweed is native to eastern Asia and was introduced to North America as a horticultural plant in the late 19th century. It can grow in a wide range of habitats including …

Japanese knotweed (Fallopia japonica) found on the Danish island of Zealand. What is striking are the densely arranged hollow trunks, which are visually reminiscent of bamboo. This …

Aug 16, 2024 · Japanese Knotweed is native to eastern Asia (Japan, Korea, China and Taiwan), where it is relatively uncommon and one of the first species to grow after eruptions or …

Japanese knotweed is an aggressive semi-woody perennial plant that is native to eastern Asia. In the 1800’s it was introduced to North America as an ornamental species and also planted for …

Jun 11, 2024 · Japanese Knotweed is an invasive species threatening our local ecosystem. Here’s what you need to know about it and what you can do about it.

Oct 30, 2025 · How to Identify Japanese Knotweed Japanese knotweed and its relatives, giant knotweed and Bohemian knotweed, look very similar. “It has an arching structure with canes …

Dec 2, 2025 · There are several approaches to treating Japanese knotweed. While you can try natural methods such as smothering, cutting, and digging of smaller and younger plants, you …

Jun 23, 2025 · Japanese knotweed (Polygonum cuspidatum or Reynoutria japonica) is an upright, shrubby, herbaceous perennial plant that can grow to over ten feet in height. It commonly …

The prevention and early detection of Japanese knotweed are essential for an effective plant management strategy. Use this document after you have assessed your site(s) to help identify …

Sep 16, 2025 · Japanese knotweed is an herb native to Asia that has been used in traditional Chinese Medicine to treat ailments such as inflammation, infection, jaundice, and more.