Early this spring I sowed seeds for a butterfly garden, and so I have a mix of plants coming up, and there are weeds in there too. Some of those I recognized and pulled, but since I don't recognize all the flowers that were in the mix, there are others that I'm still reluctant to yank. There's an awful lot of this, can anyone tell me what it is? (I'll try to find the list of what was in the mix, just in case.)