At least, I think they're weeds. I didn't plant them, I know that much.
This one is growing through my hosta, and pretty much wherever else it wants to:
This one I'm worried about because someone once told me it was hemlock:
I've looked up hemlock and I see there are things it can be mistaken for, and I
really hope it's not hemlock because this stuff grows wild right next to my
driveway, no matter how many times I think I pull it all.
This next one is a very large, stalky plant growing in my yard, there were
several, but I only let this one grow to full height to see what it would do,
and this bloomed last week:
The final one is growing wherever there's shade. It gets pretty tall, but the
roots are shallow enough that I don't mind pulling it where it doesn't belong.
Most of all, I really just want to know if any of these are toxic, as I have a
dog that grazes in the yard and she comes before plants. :)
Thanks again for all your wisdom.