[Growwine] worm damage

[Mark Hart]

Larry,

Curiosity has got the best of me.  I'm stumped.  I can think a  
catapillar that damages grape foliage in the pre-bloom to bloom stages  
that looks like that.  My guess is it is a generalist pest, and not  
grape-specific.  Any chance you could get a photograph before you do  
them in?

Another 'soft' (sensu OMRI) product you might consider is a neem-oil  
based product.  I don't know about registration in Canada.  Last I  
knew that was still in the pending stage for use on grapes.

Mark Hart


On Jun 11, 2008, at 8:57 PM, Larry Paterson wrote:

> We are having a problem with some small (about 1 cm long) black  
> worms on the leaves.  In some cases they have almost defoliated  
> entire vines.
>
> What is available to fight these (safely) without special access to  
> chemicals?
>
> Lardy
>
> Larry Paterson, lfw, rd, adcc
> (Little Fat Wino, Roving Drunk, Alcohol Distribution Channels Critic)
>
> http://www.littlefatwino.com/
>
>
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