Why did my Tree Branch Break?

brokenbranchHave you ever come outside and seen a branch laying on the ground or perhaps heard a loud crack and fall? A branch can crack and break anytime wind, snow, ice or just gravity puts more pressure on it than it can handle. Branches grow to withstand a certain amount of these forces but they also can develop weak spots, called defects, around which they can break easier than normal. Holes, clustered branches, inclusions, and cankers caused by infection are some examples of weak areas in a tree.
A branch can also break on a hot, dry day due to a moisture imbalance within the wood which causes the wood fibers to separate. This is called “summer branch drop” and it’s still not fully understood by tree experts.
Lastly, wood strength varies greatly by species. For example, White Pines are naturally more prone to breaking under high storm winds than Oaks. And certain trees are prone to developing defects such as the Bradford Pear which develops multiple branches originating from one spot on the trunk.
If you have a tree that has a break or crack and it is concerning to you, it’s best to have an arborist check it out in a Hazard Inspection.

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