Does anyone know if poison iny can grow into a tree. I just moved into a new house in a subdivision that used to be a farm. I've identified the vine growing on this tree as poison ivy but the leaves on the tree look just like the leaves on the vines. At my old house I found some poison oak that grew into a 10-15 ft. stalk that looked like a small tree, I didn't know if poison ivy could do the same if left uncheck for years. Like I said the property used to be a farm |