FAQ - Answer
Your question is valid however there is no answer that can be used since oaks grow in some many diverse soils and climates. Additionally, because of the variety of oak species (both tree and shrub) form, no two species will react the same to similar growing conditions. For example, I once counted the tree rings in two blue oak trees (Quercus Douglassi), one was over 6” in diameter and was 103 years old; the second was 3” in diameter and was 97 years old. There is no correlation between size and age in oaks because of the edaphic influences they are exposed to. The only way to determine the growth rate of a particular tree or stand of trees is to core the trunks and count the rings….no easy task given the hardness of oak wood.