Hmm, learn something new all the time. I apparently have this as well. I've not found it to be awful, but it's definitely grown into a fairly large thicket over the years. I planted it in two spots in our pasture for a bit of screening, and it's worked well for that - hasn't so far gotten away from me, but I'll definitely keep an eye on it. When we had cows they kept it in check a bit. It now makes sense why my husband came home with this many years ago as a 'freebie' from a woman who encouraged him to take ALL of it...
