Magnolia Trees
Q.

My magnolia tree has an open hole on the main trunk where it had been trimmed many years ago. It never closed up , how do I protec

Zone Middle California | TheSicilian added on December 2, 2018 | Answered

t my tree from anything infiltrating it’s health through that large hole? Magnolia tree in middle CA. Trunk is around 6ft. In diameter.

A.
A.Answers to this queston: Add Answer
drtreelove
Certified GKH Gardening Expert
Answered on December 3, 2018

No photos came through so we can only give general information.

For a large tree with a significant cavity, it is best to consult with a certifed arborist to determine risk for structural failure based on solid wood vs decayed area and potential targets if the tree were to fail structurally.
Other than risk assessment, there is not much you can do to suppress advance of the wood decay within the cavity, except to keep the tree as healthy as possible with good soil and water management.
Filling and draining cavities is an obsolete practice for professional arborists.
The tree has natural defenses to resist advance of decay. You can prevent the harboring of animals and mosquitos with screening over the opening.

00
Was this answer useful?

Log in or sign up to help answer this question.
Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Magnolia Trees
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More