This general category includes all types of physical damage to trunks or stems of trees. Other than the actual wounds, symptoms could be wilting leaves and twigs due to the disruption of water flow from the roots.

When major chunks are taken from the trunk or the stem is cracked and broken, the primary damage is the sensitive layer beneath the bark called the cambium. This is the growing point which allows trunks and stems to grow in circumference. When this layer of cells is disrupted, it causes a loss of vascular tissue that carries water and nutrients up the tree and carbohydrates and sugars down to the roots. Lacking these tissues, all or part of the tree must die depending on the amount of cambium lost.

Note: We have provided some general information and observations on this topic aimed at the home gardener. Before you take any serious action in your landscape, check with your state's land grant university's Cooperative Extension Service for the most current, appropriate, localized recommendations.


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