This isn’t a weed, this is periwinkle and anyway there’s no such thing as a weed, it’s just a beautiful flower in the wrong place 😁. Excellent advice btw. I wish more people would heed it.
Lovely photo. I believe it is a some sort of blue vinca. We have them here, mostly as groundcover because the like to spread. But they do require a fair amount of water for our clime and must be kept in the shade in our worst summer heat. That is a nice closeup with good detail.