It's been about a month since my watermelon seedlings came up. Here they are now. Note it's been less than three weeks since the last pictures! There are now three plants in the middle (instead of five), and one more came up in the corner that I just left there. The tomato plants are growing, too. As are the weeds around the edges. They have pretty little yellow flowers, so as long as they're not interfering with my garden plants, I'm letting them grow. :p
Last but not least, anyone know what this might be?