Answer: Since asparagus is sold as bare rooted (but younger) crowns, you could try to move it, but only with a lot of effort. Move it to a deep, wide and well prepared bed while it is dormant, either in late fall or very early spring. Try to take at least twelve to eighteen inches of those stringy roots with each crown, taking a root ball if it will hold together. (Mature asparagus plant roots can reach as far as six feet, so this serious surgery!)
Since asparagus tends to drift shallower over time, plant the crowns as deep as you would for a new asparagus bed, and then treat them like you would a new planting for the first year so that they have time to reestablish.
To be honest I have never heard of anyone doing this, but if the choice is one of "move it or lose it" I always opt for giving it a try. You might consider simply buying new crowns and starting over from scratch in the new location. Good luck!
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