Looks like a rather healthy specimen but they seem to be able to thrive just about anywhere. Sort of the cockroach of the plant world. Nice composition showing it in an environment that shouldn't be all that friendly to plant life.
They are an edible plant and were originally imported from Europe as a consumable.
I think that might be western goats' beard, Lain. Dandelion's only have one flower per stem. This is a very interesting take on this plant. You are very creative.
There is an issue with Uploading Photos (attachjments). I am not sure what the problem is, and I am looking into it. You can still try to Create your Threads and Upload your Photos, but it is hanging up during the Upload.