Expert advice on what to do about damaged trees after ice storm

Downed branches and an uprooted tree wreak havoc in the Allandale community of Barrie, Ont., on Sun., March 30, 2025.

Following the recent ice storm that swept through the region, Forests Canada wants home and landowners to know what to do now with damaged trees. Ice accumulation caused branches to snap, tree trunks to split, and in some cases, even uproot trees, which experts say may require attention to prevent long-term damage.

Forests Canada says ice storms can weaken trees, making them more vulnerable to disease, insects, and future storms. The agency says trees that have lost a small portion of their crown (upper branches) often recover, while those with more severe damage may need professional care.

But before residents take any action, it’s important to confirm whether a tree is on their property because trees on public land may be the responsibility of the municipality.

Damage Assessment

Forests Canada advises assessing tree damage only when it is safe to do so. It says residents should avoid working near hanging branches or split trunks and stay clear of power lines. Protective gear, such as hard hats, safety glasses, and steel-toed boots is recommended before doing anything around damaged trees. If a tree poses a significant risk, a certified arborist should be contacted.

For individual trees, recovery depends on the type of damage. Forests Canada notes trees that have lost up to half of their crown may survive with proper pruning, while those with more than 50 per cent loss may struggle. It adds that bent trees have a better chance of survival if the lean is less than 60 degrees, while split trunks often require professional evaluation, and small uprooted trees may be salvageable if at least a third of their roots remain intact. Survival is rare for larger uprooted trees, experts say.

Pruning and Recovery

Pruning can help trees recover, but timing is key. Whenever possible, it is best to wait until spring or fall before pruning damaged trees. Experts say using the right tools and making proper cuts—without damaging the branch collar—encourages healing. For young conifers with damaged tops, pruning just above the first live set of branches can help a healthy new leader grow.

Larger Forested Areas

For those with larger or rural properties, Forests Canada says the best approach is patience. Address immediate safety hazards, but wait at least one full growing season before making long-term decisions. Many forests will recover naturally, the agency adds.

Seasonal Considerations

Forests Canada says that unless a tree poses a safety risk, removing it is not always necessary. Pruning is best done in the growing season, while hardwoods should not be pruned in early spring due to sap flow. The agency says ice should be left to melt naturally rather than being removed forcefully.

For further guidance, Forests Canada recommends consulting a certified arborist or forester to determine the best next steps.

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