Hole in large hickory tree

Asked March 18, 2020, 1:00 PM EDT

Hi. We have a very large hickory tree in our residential yard in Newaygo. It has a hole where a branch was cut years ago. It is too high to look inside, but it seems that the hole is deep. What can we do to stop any decay or water from damaging the tree further? (Sorry that the pic is sideways)

Newaygo County Michigan

1 Response

Thank you for the question. It seems that this subject has evolved over the years. Today most sources recommend nothing. Capping the hole can actually speed up the decay process. Drilling drain holes can actually expose more good tissue to the decay process. Take a look at the following links:
https://hort.ifas.ufl.edu/woody/cavity.shtml
https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/trunk-wounds-and-decay
https://www.youtube.com/watch?time_continue=647&v=R61mvGgHPQk&feature=emb_logo

I hope this is helpful,