What should I do if mice gnawed the bark during winter? - briefly
Inspect the damaged section, remove loose bark, and cover the trunk with a breathable tree guard or burlap; set traps or apply rodent repellent nearby to stop further chewing. Monitor the tree throughout winter for signs of additional damage.
What should I do if mice gnawed the bark during winter? - in detail
Mice chewing the bark of trees in winter threatens the cambium and can lead to dieback if left untreated. First, examine the affected trunk for open wounds, exposed sapwood, and tunnels. Cut away any loose bark with a sharp knife, being careful not to damage healthy tissue. Apply a protective barrier—such as a thick layer of horticultural wax, tree wrap, or a commercial bark sealant—over the exposed area to prevent moisture loss and further entry.
Next, eliminate the rodents’ incentive to stay near the tree. Remove fallen debris, leaf litter, and any stored feed within a three‑meter radius. Store firewood away from the trunk and keep compost piles covered. If the property has accessible openings, seal them with steel wool, copper mesh, or expanding foam to block future ingress.
To reduce the current population, set up snap traps or live‑catch traps along the base of the tree and along known runways. Bait with peanut butter, sunflower seeds, or cheese, and check traps daily. Release captured mice at least 5 km from the site if using live traps, or dispose of dead specimens according to local regulations.
After the immediate threat is mitigated, support the tree’s recovery. Mulch a 30‑cm ring around the base, keeping the mulch away from direct contact with the trunk to avoid rot. Water the tree during dry spells, even in winter, using a slow‑release method to keep the soil moist but not saturated. Consider applying a balanced, slow‑release fertilizer in early spring to promote new growth.
Finally, monitor the tree throughout the season. Inspect the protective coating every two weeks for cracks or gaps and reapply as needed. Record any new gnaw marks and repeat the trapping cycle if activity resumes. Consistent observation and timely intervention keep the tree healthy and prevent long‑term damage from rodent activity.