asparagus bed – do i need to refresh the soil level after years of growing

Question

the soil level in my 7 year old asparagus bed has lowered by three or four inches. Do i need to add more soil? My production has continued to be great.

Answer 1

This article from Clemson University says after producing for 7 years, the beds will start to decline. So you are doing great. It wouldn't hurt to add about an inch of compost, then cover with mulch.
https://hgic.clemson.edu/factsheet/asparagus/

Here's one of ours - you surely already know most of this info, but there may be some helpful tips here: https://www.gardeningknowhow.com/edible/vegetables/asparagus/winterizing-asparagus-beds.htm