john taliaferro
Addicted to ArboristSite
yep dont scratch down their if you been carting fire woodFrom some of the infected trees I've seen, it is at least symbiotic, and the climbing roots picking up/sharing with the tree's cambium/pholem.
I won't touch those trees for 4-5 years after the vines have been long dead.
The first time I got Ivy on my nuts was all I needed to know.
Carry some dish detergent , it's better than the $$$ crap they push off for oil removal. Wash exposed clothes and tools too.
P.S. Your dog/cat is an efficient poison ivy vector. DON"T let them sit on your lap/bed/couch.......