A very good reason to start a new plant or two, Angie. I think I'd wait until a very cold day before trying to get rid of the big rosemary. I know most snakes are good ones, but we have copperheads here too. And rattlesnakes.
It reminds me of the time when my son was small and came running in to tell his dad he'd spotted a "rattle headed copper moccasin" sunning in our driveway. I guess he was trying to cover all the bases.
Thank you!