Working with our landowners and residents

In order to carry out the mapping and control of Invasive Non-Native Species (INNS), the consent and support of our lower Wye Valley landowners and residents is paramount. We are offering control or treatment of these problematic plants at no charge.

We are now collecting written consent via our Access and INNS Control Consent Form for our 2022 INNS control schedule – link ⇓ 

Access and INNS Control Consent Form

So, if you’d like your Japanese knotweed, American skunk cabbage or Himalayan balsam included in our 2022 control schedule, please complete the Consent Form (link above) and return it to us at by end May 2022

How to complete it: You will either need to print out the form, fill it out by hand, take a photo/scan it and attach to your return email, or if you have Adobe editing suite you will be able to complete it online. Please complete all relevant sections with as much detail as possible. If you have difficulties please do get in touch using the email address above or call Nickie on 07539 902681 (Mon-Fri, 9am – 5pm) and we can send you an easier to edit version direct. 


Access and INNS Control Consent Form – the context

The WISP – Wye Invasive Species Project – is a Wye Valley AONB Partnership initiative to support local landowners and communities in the lower Wye Valley (downstream of Monmouth) to bringing 3 Invasive Non-Native Species (INNS) under control – Himalayan Balsam, Japanese Knotweed and American Skunk Cabbage.

With Himalayan Balsam we’re teaming up with local community volunteers and contractors (where the terrain is more dangerous or very overgrown) to pull it up or cut it down before it sets seed. Depending on the flowering season this work must be carried out between May through to August. The form seeks landowner consent to enable the Wye Valley AONB team, AONB Volunteers and our contractors to access to your land to carry out mapping of Himalayan Balsam sites and manual/mechanical control.

With Japanese Knotweed and American Skunk Cabbage, chemical control with a glyphosate-based herbicide is the recommended treatment due to their extensive root structure. Where these plants dominate an area, foliar spraying by certified contractors is the most cost effective and successful method. Where there are only a few mature plants these can be stem injected. Even with chemical treatment these species can require 3+ years of treatment. We hope that the areas that are dominated by invasives today will get to a point, after a few treatments, where stem-injection is feasible.  The form seeks landowner consent to allow the AONB team and contactors to access your land to carry out mapping of Japanese knotweed and/or American Skunk Cabbage and chemical treatment.

All staff, volunteers and contractors will adhere to Covid-19 guidance at all times.