Spider plants. About the first plant I ever got that was mine as a kid in OH, had it for decades, then my Mom put some in the ground here in AL - what a novelty, right - a house plant that is hardy outside. Fast-forward about 2 years and there I am, spending hours digging it all up to save her garden. It was clearly on a good start toward taking over the whole yard. I don't have any in a pot anymore now either.
Variegated Vinca. Holy cow it's pretty, I mean really very pretty, but also will not stop until it's taken over the world. Also dug/ripped up.
