Last spring (2014) I was going to raise my garden up another 10" and I had established asparagus there. I knew I couldn't just pile 10" of soil above all that asparagus so I decided to just dig it all up, fill in underneath it, and them sit it back down. I dug two feet out and two feet deep to remove that asparagus. I finally gave up. I could not budge any of it. I ended up building a 1x10 inch "coffer-dam" around all the asparagus, filling in that 10" of soil in the rest of the garden and then over the summer/fall, slowly filled in leaves/soil to build up that area over the asparagus. I had absolutely no asparagus to harvest this year (2015). I basically lost it all. All I did by trying to dig it up was to cut through the majority of roots and stunt the growth of the asparagus. Some of it finally did come back this summer, but it looks like it will be another year or even two before I'll have asparagus again.
