It took me a while to put it all together and realize we have a nice patch of our own and it's actually pretty tasty, nothing like eating other common weeds like eating bitter dandelion.
My theory is that it arrived here long ago transplanted along with a Douglas Fir tree that my friend Tom McRoberts brought with him when he visited us. About 12 years ago Tom did a brief stint working in a tree nursery for the Washington State Forest service. I asked Tom if he could score us some Doug Fir seedlings. He brought us three. One was planted in our front yard and is quickly growing to be way too large for the space. (What was I thinking planting it here?!)
I need to poke around the neighborhood and see if I can find it elsewhere. I haven't seen any elsewhere though. It made for a great addition to last night's dinner salad.