Oak Trees
Q.

Castle Green Oak trees

Zone Coeu d' Alene Idaho | landtfergie added on September 12, 2016 | Answered

Can I top and how to trim a "Castle Green Oak" tree?

A.
A.Answers to this queston: Add Answer
Alisma
Certified GKH Gardening Expert
Answered on September 13, 2016

It looks like this is a relatively new columnar oak variety. Here is more information about these trees:

https://www.gardeningknowhow.com/ornamental/trees/oak/columnar-oak-trees.htm

Letting the tree grow in its natural shape is the best option, and topping is to be avoided. But, here is an alternative approach recommended by a university extension agent for someone who had a similar question:

https://ask.extension.org/questions/249500

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