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Nursery Forum & Plant Health
Think its a gall
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<blockquote data-quote="ATH" data-source="post: 4255335" data-attributes="member: 12506"><p>A) agree control is not going to work.</p><p>B) while the population of the wasps will rise and fall, the galls don't come and go (especially the "go" part) with those population changes.</p><p>C) I have seen several trees where the galls are severe enough to gridle the twigs. When the ends of enough of the twigs are girdled the tree can start to suffer. I have seen this more on bitternut hickory...but I have seen in on oak (red oak group) as well - shingle oak more frequently than other oaks.</p></blockquote><p></p>
[QUOTE="ATH, post: 4255335, member: 12506"] A) agree control is not going to work. B) while the population of the wasps will rise and fall, the galls don't come and go (especially the "go" part) with those population changes. C) I have seen several trees where the galls are severe enough to gridle the twigs. When the ends of enough of the twigs are girdled the tree can start to suffer. I have seen this more on bitternut hickory...but I have seen in on oak (red oak group) as well - shingle oak more frequently than other oaks. [/QUOTE]
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