Woofie, I don't know.. since I'd seen it that one time, seems now I see it all over the place. Takes over the trees even and strangles out the other plants
I know goats are a hardy animal... but??? gosh I just don't have an answer for ya there hun.
I had a heck of a time trying to keep it under control this last year, there were seedlings of it coming up everywhere. All I can figure is the birds had a good time with transplanting it... keeping me busy