ONE OF THE WORLD'S MOST SUCCESSFUL INVASIVE SPECIES

jAPANESE KNOTWEED

Reynoutria Japonica

Origins and Spread

As the plant's common name implies, its origins lie in East Asia and Japan, where it has grown for thousands of years. However, human actions in the past few centuries have allowed it to spread across the world. Find out more below.

Origins

Characteristics

Japanese knotweed can be easily recognized because of its tall, tightly-bunched stems and large, broad leaves. To find out more about the plant's appearance and defining features, read more here:

Why This Plant is a Problem

Japanese knotweed has found success across the globe because of three predominant factors: its rate of growth, density of growth, and its height. To find out more, click below:

Control and Removal

Japanese knotweed is notoriously difficult to get rid of once it has grown into an area, but some methods have been developed to control it. To learn more about the plant's resilience and these methods, read on below.

Why We Should Care

Knotweed has become common in New Jersey and other nearby states, and it threatens to disturb many fragile ecosystems in our region. For more information, click here: