Here is an Artichoke.
This one happens to be at Mustard Seed school. That is a school for homeless children at Loaves & Fishes.
And a close up of the Artichoke itself.
Now comparing this to the Thistle from the other day shows a very similar plant leave. The blue color from the Thistle is probably a combination of the light and perhaps a bit overzealous color tweak on my part.