[NAFEX] Grape Vines and Japanese Beetles

road's end farm organic101 at linkny.com
Thu Jun 12 09:37:30 EDT 2003

On Wednesday, June 11, 2003, at 12:42 PM, Scott Williamson wrote:

I just planted three grape vines this spring and have read that Japanese 
Beetles take a liking to them.  I was wondering if anyone knew if I 
should be real concerned about them or not.  I have only lived at my 
current location about a year and didn't notice a large number of them 
last year, but it could have been an off season for them.  I am trying 
to go organic with my property and would like to avoid spraying if 
possible.  I'm assuming that once the vines get larger they can handle 
minor problems, but I don't really want the find them defoliated the 
first year I've had them planted.  Any suggestions and/or info would be 
much appreciated.

Scott Williamson
central Indiana
zone 5

You may not have any problem; it might depend on pressure on your 
particular property, and/or on the variety of grape, but grapes grown 
organically here (Finger Lakes NY zone 5) often are fine without any 

Surround sounds as if it might be a good idea, if the pressure is heavy; 
as these are new vines and should not be bearing yet, the problem with 
removing it from the fruit won't be an issue.

  I know they were there because there were some weeds they REALLY liked 
that were completely defoliated when I would come across, but I never 
saw lots of them.

It's possible that these weeds are more attractive to them than the 
grapes are, in which case you may have little problem. I would keep that 
particular weed well cleaned out right around the grapes; and maybe 
leave a patch of it some distance away to attract the beetles away from 
the grapes.

-- Rivka

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