Cicada damage to trees - Ask Extension
Hi,
I have a black gum tree that we planted about 6 years ago. I noticed the other day that a branch was wilted, and saw cicada damage there from egg...
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Cicada damage to trees #752591
Asked May 27, 2021, 4:38 PM EDT
Hi,
I have a black gum tree that we planted about 6 years ago. I noticed the other day that a branch was wilted, and saw cicada damage there from egg laying. It is clear that branch will die off soon, and I see similar damage on the underside of other branches as well, although no flagging yet. Since I had heard cicadas don't damage trees, I didn't investigate much, but now I see that the egg laying process can harm young trees and I am concerned they may kill my tree! So, I have a few questions: 1) Should I be concerned about this tree (6 years since planting, 5" diameter trunk 1 foot from ground), 2) Is it too late to wrap the tree in netting as recommended, 3) Is there anything else I can do to protect my tree and help it withstand the onslaught? Thank you for your help and guidance...I wish I had known sooner about this type of damage.
Montgomery County Maryland
Expert Response
Since your black gum has a 5" diameter, it is fairly large and should be able to tolerate the tip pruning of cicadas.
You can certainly still net it if you want to. https://extension.umd.edu/resource/cicadas
There are no other recommended actions necessary. Do not spray pesticides. They are ineffective and those sold are deadly to beneficial insects. Cicadas evolved with trees. They co-exist well.
Ellen
Hi Ellen,
Thank you so much for the quick reply. And no worries - I wouldn't have resorted to pesticides! Yuck! We are trying to be nature friendly and I am actually fascinated by the cicadas... Just got a little panicked when I saw some damage.
I appreciate it.
Best,
Jessica
You're welcome.