Perennial. Dont know what the flowers look like (Im assuming it does flower). I was at work the other day and the vendor brought this to me. It didnt have a tag and it seemed to be the only one. I dont have any other pics, a gentleman was interested in it, and the vendor said she was going to mark it half price since we didnt know what it was, and it was sold! ( photo / image / picture from TheBip's Garden )
I never even consider id'ing a plant buuuut... that looks a lot like the pink sundrops I have in my garden. The leaves on mine had a reddish tint to them after the blooms last year. I had to google the actual name: Oenothera, pink sundrops or evening primrose. Seems like there are a lot of variations, perhaps someone else will be able to narrow it down.