Are Carpenter Ants or Other Insects Damaging My Tree?
Sometimes — but they are often a symptom of decay, not the original cause.
What’s Actually Happening
Carpenter ants do not typically attack healthy wood. They prefer wood that is already decaying or softened by moisture.
When carpenter ants are present, it often indicates:
- Internal decay• Cavities
- Structural compromise
They excavate galleries within decayed areas, which can enlarge cavities and allow more moisture intrusion over time.
Other insects may:
- Feed on leaves
- Bore into bark
- Exploit stressed trees
Local Context (Niagara)
In Niagara’s humid summers and freeze-thaw winters, decay fungi often precede insect colonization.
From our experience, when we observe active carpenter ants inside a tree, the tree is often structurally compromised to some degree.
How to Handle It
- Identify whether decay is present
- Assess structural stability
- Monitor for progression
In some cases, monitoring is sufficient. In others, risk assessment and mitigation are necessary.
Bottom Line
Carpenter ants usually indicate existing decay — not the beginning of it