What type of wood do carpenter bees prefer to excavate?

Carpenter bees are known for their preference for sound or damaged wood when it comes to excavation. They typically seek out unpainted, untreated wood that is soft enough to burrow into but still structurally sound. The reason they prefer this type of wood is that it provides an ideal environment for nesting. Sound wood offers the right balance of strength and workability, allowing them to create tunnels effectively.

Damaged wood also attracts carpenter bees because the existing fissures or soft spots can make it easier for them to begin their excavation process. If there are signs of aging or decay, it may be even more enticing to them. This selection allows them to establish their nests with relatively less effort compared to more resilient or painted surfaces, which are typically less favorable for invasion due to their density and treatment.

While new wood may seem like an attractive option for excavation, it often lacks the wear or weathering that makes sound or damaged wood more approachable for these bees. Similarly, painted wood or materials with metal components do not provide the suitable conditions for nesting, as paints and coatings can create barriers and metal may not have the structural integrity needed by carpenter bees.