Is it true that rapidly growing trees can be less resistant to certain insects and diseases?

Rapidly growing trees tend to be less resistant to certain insects and diseases primarily because of the physiological and structural changes that occur during rapid growth. These trees invest a significant amount of energy into growth rather than in developing thicker bark, robust defense mechanisms, or chemical compounds that deter pests. This can make them more susceptible to infestations and infections.

Additionally, fast-growing trees may have less dense wood and weaker cellular structures, which can further predispose them to attacks from insects and pathogens. Certain diseases may thrive in the stress conditions associated with rapid growth, where the tree's defenses are already compromised.

While it is essential to note that not every rapidly growing species will exhibit the same level of vulnerability, the general trend supports the idea that rapid growth can diminish a tree's overall resilience to various health threats. Thus, the statement regarding the relationship between rapid growth and susceptibility is indeed true.