I started everything from seed this year, with over 40 varieties of annuals. I'm not sure if this thing is one of them or just a weed. It is definitely the tallest thing in my garden right now. I can see a bud forming at the top that looks like it is going to flower at some point. I've got a lot of these throughout my garden, which makes me think they are a weed. But I just want to make sure before I yank them all out. The spikes coming out of the leaves make it look dangerous.
P.S. I'm in the PWN, Portland, OR to be exact.
A close-up pic of the bud forming at the top.