We materialize Japanese Knotweed.

Japanese Knotweed board in a Japanese Knotweed field

Our Products

Sample kit Sample kit
Sample kit
€35.00

A Japanese Knotweed sample set consists of three pieces measuring 17 × 11 cm each.

About Why Knot

At Foundation Why Knot, we take a fresh approach to invasive species. Instead of seeing them as……

Learn more
Japanese Knotweed beneath a concrete bridge with a metal railing, under a cloudy sky.

Contact Us

Want to know more about our materials? Fill out the form and we will be in touch shortly.