What problem could this be on my grapes?
A few weeks ago I don’t think these dark areas were there.
I have about 8 different varieties of grapes and it seems to be on most of them.
Any inisights or advice would be much appreciated.
John in Kentucky
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It is mostly on the newer tips, or ends of the vines. I did spray them with some Immuonox and some dish soap about two weeks ago.
Other than that, no treatment on my part.
Hoping for some help, and thank you all as always!
John
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Looks like you have your answer photo-bombing one of your pictures(number 2). Look at “Grape Cane Girdler”
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Looks like a good call! Never heard of this one
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And this could be a second enemy
https://www.omafra.gov.on.ca/IPM/english/grapes/insects/gallmaker.html
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Good eye!
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Grape cane gallmaker, not realistic to treat for them. Unless the gall is right at the tying point (flexing against the wire) I don’t worry about them when pruning either.
The spots in the last picture are likely phomopsis, a fungal disease that releases spores mostly all at once so nothing to do now either.
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Thank you everyone for your input! Very helpful.
I did some more research now that I knew what I was dealing with and found this site helpful.
Grape Cane Gallmaker and Grape Cane Girdler | Entomology (uky.edu)
John in Kentucky
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