There are several plants I was hoping you guys could identify for me, some of which are growing in my gardens, and some in a nearby park. I love to learn about edibility and usefulness too, as I have a very flexible notion of what counts as a "weed". So please let me know anything else you know about these plants. I can take more pictures too, if needed.
This one grows in the park nearby.
I'm pretty sure these are different from the previous plant. This photo was taken in the park as well, but these grow in my garden and are quite difficult to get rid of, as they spread by rhizome and will come back from the smallest piece of root left in the ground.
This is a really interesting looking plant I see in the park, and it looks like some kind of bug finds it rather tasty.
Another one from my yard. It shows up everywhere. I always pull it up before it can go to seed, but I'm wondering if it's something useful, if kept under control.
Thanks guys!
Joel