I've grown artichokes - to be more precise, I've grown artichoke plants. The newer varieties mature much faster than the ones they grow in warm areas, so there's a good possibility you'll get some actual chokes. Give them plenty of room, really good soil (though excellent drainage is required). Last year's 'crop', planted in a raised bed full of compost, would have been spectacular, if I hadn't let the squash clamber all over them. Like I said, they like space.

Also, try to place them in a sheltered spot that heats up - even the newer varieties still like warmth.

I mostly grow them for the foliage, as "temperennials" - they're really stunning. If I get a choke, I usually just leave it on the plant - guess I'm not much of a vegetable gardener.

Here's what Johnny's Seeds says about growing them. I've never tried, but the foliage is spectacular.

Here is a link that might be useful: Johnny's Select Seeds Artichoke info