Grape issues

[Mike Dreger]

Anybody know what this is on my grapes and how to cure it for next year?

 

[MaryMary]

This is truly a WAG, because I don't grow grapes, but I'll answer in the hopes maybe someone will come along and correct me!

I think they might be sunburned. I made myself a bet, then used my google-fu to see if I was right. Here is an article I found and there is a picture of green grapes that look a lot like yours.

Again, I could be wrong, but we didn't bet much.

http://www.my-grape-vine.com/blog/sunburn-scald-on-grapes/

 

[Mike Dreger]

Thanks MaryMary

 

[Rajesh Sethi]

I too wish it's just sunburn not some fungal infection.

Does it get the full sun, both side of grapes have the spots?

Does it appears on grapes that are shaded by leaves, too?

 

[Becky]

The spots on the grapes look a little like blossom end rot that you see on tomatoes... I have no idea though, never grown either grapes or tomatoes!

 

[Mike Dreger]

@Rajesh Sethi Yes the grape vine gets 8 hours of sun and the spots are all over the grapes. I believe it is a fungus.