Prune back your blueberry bushes in late fall to remove any leaves or fruit that is still on the stems. Use pruning sheers to snip off all leaves.
Apply 3 to 4 inches of winter mulch to the base of each plant. Apply straw, leaves or evergreen boughs. This will keep moisture and warmth at the roots of each plant. Replenish the mulch as needed to keep the depth at 3 to 4 inches.
Water your blueberry bushes to keep them moist in the winter. Roots and stems can suffer more damage when they are dry and brittle. The soil should remain moist and well-drained.