How Do You Winterize An Asparagus Bed?
To winterize an asparagus bed, cut down the ferns in the fall after they have turned brown. Remove and throw away any debris from the bed. Apply a thick layer of mulch, such as straw or shredded leaves, over the bed to protect the crowns from freezing temperatures. Asparagus beds should be mulched to a depth of at least 2-3 inches to provide sufficient insulation. The bed should be kept weed-free to minimize any insects or pests that can overwinter in the bed, which can damage the roots and emerging shoots in the spring.