I started a garden a couple of months ago, my first since I was very young. I've planted a variety of wild plants and herbs, mainly from seeds I bought online. In one little plot, I sowed what I thought were thyme seeds (thymus vulgaris I think), but what grew there sure doesn't look like thyme (see image). Can someone help me identify this plant? It has grown about 26 inches in a month and a half, and it's just starting to flower. I looks a little like pokeweed, but it has green stalks, not red.