I use Neem Oil a 1-2 times per year on everything, including grapes and
Ribes. I also use micronized sulfur, lime sulfur, copper, and Serenade, so I
can't single out the Neem Oil as being effective. But I don't see much in
the way of disease problems and, as you've seen, there are plenty of reports
Neem Oil is effective. One thing I know it's effective on is thrips on
orchids. Several plants had an infestation a few years ago and four weekly
sprays of Neem Oil eliminated them.
Bruce Wittchen
1/2 mile outside Hartford, CT
>Hello all,
>
>I did a quick search of the Archives and found some
>comments on Neem Oil being quite effective. I am
>wondering if anyone has any experience with this for
>fungal control on Ribes and Grapes as well. I'd much
>prefer to use something like this opposed to some of
>the other pesticides if it isn't necessary.
>
>Regards,
>Todd Ravitch
>NE Oklahoma UDSA Zone 6