My parents bought a new house and the previous owners had a vegetable garden. Instead of tearing out the wood framing and soil, my parents decided to have a garden of their own this year. A plant that we didn’t plant started growing. I thought it was a weed and I was about to pull it, when I noticed how thick it’s stalk was. I decided to let it go to see if something the previous owners had planted was growing. The plants are pretty big now, but I have no clue what they are! Can anyone help me identify them please?