What is this thing? This thing has grown 6ft in a months time, my mom thinks it is a weed, but I swear I saw it being sold in a store, it is getting pretty big, and I think she wants to know if this thing will be reaching giants soon cause wow. We have no idea what it is, it wasn't growing here when we moved in, and now it is 6ft tall. I like it, but I don't think she does, if she wanted to get rid of it, how would we do that, and does it pose a threat to any shade garden we might plant there?