This tree split during a thunderstorm

This damage is common on shade trees that are not placed on a preventive pruning program. Damage can be reduced substantially with appropriate structural pruning.

One of the codominant stems on this mahogany split from the tree.

Mahogany showing substantial damage to the trunk from a large codominant stem splitting from the tree.

Close-up shows that roots had begun growing in the decayed area that began as a result of the inclusion. This is a common occurrance on many planted shade trees.