Whether to have a tree cut (removed) is sometimes a matter of preference, though trees can also be removed due to location, health, growth pattern, storm damage, or construction. A tree should be removed if it has become structurally unstable and is at risk of causing injury and/or property damage. Signs that a tree may be structurally unstable may include exposed or rotting roots, multiple (codominant) stems, an obvious lack of foliage or dead wood, and falling branches or stems. Tree pruning is also a matter of preference, though regular tree maintenance (every 2-4 years approximately) is important for the health of the tree and the protection of property. Regular tree maintenance can include trimming/pruning, cabling, fertilizations, and risk assessments/inspections, among other things.