Have you ever planted something that later regretted? I don't really mean a tree in the wrong place, or a bush that you didn't like. I mean a plant that after the fact made you just hate it.
I let my daughter plant some herbs three years ago. One of which was mint. Hey it smells good and we had planned on using it in our herbal tea. However, it is not an annual, but a perennial, which we didn't know. It is also very hardy. I mean you simply cannot kill it. It even kept growing in the winter despite cold and snow. Last summer we dug it up as much as we could, watered it with vinegar which was supposed to kill it, yet it survived. This past winter it kept growing again. Yesterday I pulled up bricks and dug up every bit of it I could find. I searched and removed every leaf and bit of root I could find no matter how small. Yet I know it will grow back and haunt me next year.