How should asparagus be winterized in the Willamette Valley?
Yamhill County Oregon
Asparagus is a hardy perennial. Weed the asparagus patch, taking care to not damage the crowns. You can mulch with compost now or you can wait until we have a killing frost. At that time, cut the plants to ground level. A 3 inch layer of compost will provide the nutrients the plants need for a great start next spring.