Should I leave asparagus ferns standing through the winter or cut them down this fall?
If your asparagus plants were disease- and insect-free, leave the ferns in place over the winter. The stems catch snow for additional insulation and soil moisture. Snow cover can also delay the early emer-gence of asparagus in spring. (Early warm air temperatures can spur asparagus spear development; then sudden drops in temperature lead to frost damage.) In early spring, mow or cut back the old ferny growth to ground level before spears emerge.