Q.Oak tree shooting acorns
The oak is shooting these deformed acorns. What is the cause and what can be done? Thanks
nikki-phipps
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 1, 2017
This sounds like knopper gall which is due to a wasp. Generally, insect galls will not harm the tree, though the affected acorns will not germinate - but unless you're growing these this shouldn't be much of an issue.
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