Created by the iMapInvasives Network
Welcome to iMapInvasives, New York's Online Invasive Species Database and Mapping System!
                      NY iMapInvasives Portal

"On a global basis...the two great destroyers of biodiversity are, first, habitat destruction, and second, invasion by exotic species..."
 E.O. Wilson (Strangers in Paradise, 1997)   
 There are different types of invasive knotweeds in NY. Leaf size and flowers can help distinguish them, as spelled out in this handy guide from U of Idaho. If you are unsure which species it is, you can enter "Knotweed (species unknown)" into iMapInvasives. 

                  Reynoutria japonica - Japanese knotweed

Photo by: Steve Young, NYNHP

Photo by: Steve Young, NYNHP

Photo by: Leslie J. Mehrhoff

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