Get in touch
If you have questions about suspected Japanese knotweed, photograph reviews or information on this website, you can contact us using the details below.
Please include clear photographs if you are enquiring about possible knotweed identification.
Postal address
Peter Warren Associates
3rd Floor
84 Salop Street
Wolverhampton
WV3 0SR
Photographs and enquiries
If you are sending photographs, wider images showing the whole plant and surrounding area are usually the most useful.
Including nearby paving, walls or boundaries can also help provide context.
Response times
Response times may vary depending on enquiry levels and the number of photographs submitted.
Many suspicious plants turn out not to be Japanese knotweed, so there is no need to panic while awaiting a reply.
Not sure whether to worry?
A photograph can often help identify whether a plant may resemble Japanese knotweed.