Although frost cracks can seem unpredictable, there are proactive measures Ontario homeowners can take to minimize the risk to their trees. Frost crack prevention could be weight reduction pruning and canopy thinning. Winter preparation is key, and here are several essential tips to help protect your trees.
Proper Pruning
Before winter sets in, it is wise to have an arborist prune your trees to remove weak or damaged limbs. Healthy branches are less likely to crack under ice and snow.
Tree Wrapping
Young or thin-barked trees are particularly vulnerable to frost cracks. Wrapping their trunks with burlap or commercial tree wrap helps moderate temperature fluctuations, reducing the risk of cracking.
Correct Mulching Technique
Mulch provides insulation, protecting roots from severe temperature swings. However, avoid piling mulch directly against the trunk. Keep mulch at least 5–10 centimetres away from the base and no deeper than 10 centimetres to prevent pest infestation and rot.
Adequate Watering
Hydrating your trees deeply before the ground freezes supports their resilience through the winter months. Trees that enter winter well-watered have a better chance of surviving the coldest months.
Tree Selection
When considering planting trees, it is worth looking for species native to Ontario or those known for their resilience to harsh weather conditions.