Mint (Mentha sp.)
Location: Kohala Coast, Big Island, Hawaii
Several years ago, my neighbor gave me a mint plant in a small pot to look after for her while she was away for the summer. The plant grew steadily, and we finally transferred it to a larger pot. When my friend returned she was amazed at how much the little mint plant had grown. She said, "I think that plant likes you better than it liked me, so you should keep it."
It has since been repotted twice more, and it's still flourishing in the middle of my herb garden.