I have quite a few plants that some would consider weeds. Some (like the horse herb), my husband considers weeds, and some (like the Asian jasmine) I consider weeds and some, like the spiderwort that Bob accidentally gave me when he dug up one of his giant petunias, are considered weeds by one, and precious flowers by another.
I've identified horse herb and frog fruit in my yard (both considered weeds by the husband). We obviously have a ton of Asian jasmine and it takes over EVERYTHING, thus it is a weed. The spiderwort is not yet considered a weed by us. Claude helped identify vetch, which I considered a weed. I don't think the husband considered it a weed until it started growing in the lawn.
But, what I can't figure out is whether this is a weed or not:
I mean it's a plant that I didn't plant and most of the time it looks pretty weed-like. But then it flowers with these actually quite large (relatively) and pretty (relatively) purple flowers. Very petunia-esque.
I've also found some type of Iris in this corner of the yard (by the cable box electrical doohickey thingamabopper), I should probably dig that up and put it where it will get sun so I can find out if I want to keep it or not...