I am a very novice gardnener and I'm trying my hand at a salsa garden this summer. I planted various types of tomatoes, peppers, onions and cliantro. I now realize I should have used a bigger planter, or less veggies. Because there is such a variety of things growing, I am not sure what is what. Can anyone identify this plant for me? It almost looks like a weed, and I'm not sure if I should pull it? It is tall and has wispy, light purple flowers with no signs of veggies yet. Thanks so much!