Acer problem

My ACER palmatum, which is about 25 yrs old, was potted until 5 yrs ago but is now in the ground and has been perfectly healthy until now. It looks about 75% dead. There are two beautiful branches and the rest look like sticks with an occasional very slim red growth but no leaves. Can you suggest a reason for this rapid decline and if it is possible to encourage it to regrow or is it a case of accepting the inevitable and starting again?
M Lence

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1 Comment To "Acer problem"

#1 Comment By Downtoearthdigs On 05/09/2016 @ 1:45 pm

There are a few reasons for the branch die-back. It could simply be winter injury or maybe a fungal disease, such as verticillium wilt. Here are a few links on verticillium wilt that will aid you in diagnosing your tree:
https://bit.ly/1HoK0tQ ^[1]
https://www.rhs.org.uk/advice/profile?PID=255 ^[2]

In the meantime you should prune away the dead branches. You can verify the branches are dead by cutting a small sliver of bark from each branch in question – if it’s tinged green it’s alive and has hope of recovery, if it’s tan it’s dead and should be removed.

For information on a host of other japanese maple pests and diseases, please visit the following link:
https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maple-problems.htm ^[3]

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URL to article: https://questions.gardeningknowhow.com/my-acer-palmatum-which-is-about-25yrs-old-was-potted-until-5yrs-ago-but-is-now-in-the-ground-and-has-been-perfectly-healthy-until/

URLs in this post:

[1] https://bit.ly/1HoK0tQ: https://bit.ly/1HoK0tQ

[2] https://www.rhs.org.uk/advice/profile?PID=255: https://www.rhs.org.uk/advice/profile?PID=255

[3] https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maple-problems.htm: https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maple-problems.htm

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