Apple Trees

Apple Tree Diseases

phil rooksby added on March 22, 2016 | Answered

I grafted two apple cuttings onto a wild pear several years ago. It was successful and fruited. But this year the grafts snapped, revealing the cause: a brown/red rot in the heart of the wood. What is it?

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Certified GKH Gardening Expert
Answered on March 23, 2016

It sounds like it is a wood rot of some kind.
Could be a bacterial disease or fungus.

A canker may have occurred at the graft site from an injury or even winter damage.

Here is a link with more information.

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