Report It

Please send us your sightings 

Here’s what to do if you spot any of our 3 target species around the lower Wye Valley, downstream of Monmouth:

Himalayan balsam

We’re aware of how prolific Himalayan balsam is along the riverbanks of the Wye and along the A466, but if you know of patches of balsam in the upper catchments – in fields, woodlands, gardens, hedgerows and footpaths – we’re very keen to hear from you. This species will only be effectively controlled by working from the most upstream extent downstream. Do get in touch if you’d like to know more about this approach. 

Japanese knotweed and American skunk cabbage

If you see either of these species growing in the lower Wye Valley AONB (downstream of Monmouth) please do get in touch to see if we can add those sites to our current control schedule. 

What information to send

Please email Ellie at with as much of the following information as you can:

  • OS Grid Reference (can be obtained off Google Maps, ViewRanger, OS Map app) or What3Words address (the W3W app can be downloaded here)
  • Photo/s of the species in situ
  • Site information – where it’s growing, access issues, livestock or pets present
  • Details about the plants – what species, how abundant it looks (dominant, abundant, frequent, occasional, rare), whether it’s been treated or managed
  • Any landowner information. If you know the landowner please do recommend that they get in touch with us as soon as possible. If you are the landowner please complete our Access and INNS Control Consent Form and return that to us by end May 2022 so we can see if your site can be added to our 2022 control schedule.

What happens to these reports

Your reports help us to improve our understanding of the spread of these Invasive Non-Native Species around the lower Wye Valley, helping us to target our resources most effectively. They are added to our growing INNS Mapping system so that we can monitor how effective our control work has been. We use a traffic light system that tells us if an invasive at a site is dominant/abundant (red), frequent (amber), occasional/rare (green) or not present (grey). We hope that over the duration of the project, areas of red will turn amber, then green and then grey. We will still need to monitor the green and grey sites because these incredibly robust species can put in a surprise appearance a year or two after they are believed to have been eradicated. 

Contact details of those reporting the sightings and of landowners will remain confidential and will never be passed to a third party.

We do share the grid references and species information with the Local Environment Record Centres (LERCs) e.g. South East Wales Biological Record Centre (SEWBReC) and also the NBN Wales INNS Portal. Feeding into these centralised regional and national record centres will ensure that the Wye Valley AONB is considered when funding decisions are made for future INNS programmes.  

Reporting Japanese knotweed to your council or forestry estate

If you see Japanese knotweed along a road or in a public park please report it to us and to your local council – they all have an invasive species reporting page. If you see any growing on Forestry England, Woodland Trust or Natural Resources Wales estate please report it to both us and the appropriate organisation.