Stuff in the yard, it is no longer variegated but vinca here.
Pink oxalis, in my next flowerbed to weed, spreads by underground or above apparently, closed in todays drizzles, chuckl
Never can remember this one's name, if you let it get in the ground it takes over where other things won't grow, grrr, not even roundup kills it without years of aggressive attacks.
Then there is also the tradescantia, has withstood last summer and truly horrid last few years of Winter,
I was wondering if your spot was under an elm or an oak as they don't tolerate grasses by under them. Ummm, also, there are plants that have a short life of 5 yrs( not just 2 yrs) and they die out because the soil nutrition was stripped for the plants that grew there, when the plant runs out of the needed food, it is either going to die or move away.