this is a heat map of a non native spices of plant called oriental bittersweet or Celastrus_Orbiculatus it is native in China, Japan and Korea and It closely resembles the native North American species, Celastrus scandens there's not much we can do BUT if you see bitter sweet BURN IT! why would I ask you to burn it? you ask. well oriental bittersweet climbs up trees tightly wraps around the branches and tears the branches down. https://en.wikipedia.org/wiki/Celastrus_orbiculatus