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Tree Care Forums
Arborist 101
Black Walnut Tree Cookie Heart Damage
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<blockquote data-quote="markle" data-source="post: 7952443" data-attributes="member: 188646"><p>When doing some recent crop tree release in a walnut plantation, more than once I’ve seen this pattern of internal penetration damage on the lower quarter of the trunk, usually facing south. I am familiar with frost cracks in maples, and suspect this might be something similar. If so, it looks like the damaging event happened twenty years or so ago, and the tree annually fails to callus over it. Have you seen it? Thoughts?</p></blockquote><p></p>
[QUOTE="markle, post: 7952443, member: 188646"] When doing some recent crop tree release in a walnut plantation, more than once I’ve seen this pattern of internal penetration damage on the lower quarter of the trunk, usually facing south. I am familiar with frost cracks in maples, and suspect this might be something similar. If so, it looks like the damaging event happened twenty years or so ago, and the tree annually fails to callus over it. Have you seen it? Thoughts? [/QUOTE]
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