Walnut, Black Growth

Asked December 30, 2015, 7:35 PM EST

How can you determine the age of a black walnut tree without cutting it and counting the rings?

Santa Clara County California black walnut tree nut trees

1 Response

Foresters have an instrument called a tree ring borer. it is a hollow drill that is screwed into the tree creating less than a 3/8 inch hole in the tree. a 1/8 tree core is extracted and the hollow drill is extracted. The forester can clean up the core with sand paper or a razer blade and count the rings from the bark to the pith. this is the least invasive means of aging a tree. the wound should seal over in 2-3 years and the tree should be fine.