relocation of fruit and veg

Basic rule with moving shrubs is never during growing season unless you're desperate to save them from a bulldozer or whatever. Wait until they're dormant in fall and then dig them up with enough soil around the roots so there's minimal disturbance there. Be sure the new hole is full of good stuff like compost or manure, blood, fish & bonemeal, etc. and water well once in. Come spring they should never notice they moved.
I'm not familiar with artichokes myself so someone else can advise on that. I'm guessing it would be the same as above.