North American Fruit Explorers mailing list at ibiblio

["Lon J. Rombough" <lonrom@hevanet.com>]

Sounds like the leaf form of the insect phylloxera.  Varieties resistant to the root form are susceptible to the leaf form.  It takes a LOT of the leaf galls to  really harm  a vine, though.  At this stage it's simple to remove and burn the affected leaves/
=Lon Rombough
NEW grape pruning video: http://www.bunchgrapes.com/dvd.html View a short, low resolution clip here: http://www.youtube.com/watch?v=8Q58zFY0B1M
Grapes, writing, consulting, my book, The Grape Grower, at http://www.bunchgrapes.com  Winner of the Garden Writers Association "Best Talent in Writing" award for 2003. 
A video about The Grape Grower : http://cookingupastory.com/index.php/2008/04/18/the-grape-grower/
On Aug 9, 2009, at 12:03 PM, John Maurer wrote:

Hi all.  Newbie grape grower, first time poster.  Went out to the grape 
vines today and found one leaf on a Glenora vine that was covered with 
pointed green spikes about 3/32 inch diameter and 1/2 inch long.  Only 
one leaf is affected.  The spikes are growing right out of the leaf, 
about 3/4 of the leaf is covered.  Does anyone know what this could be?  
I have photos, email me directly at j m a u r e r 7 3 at v e r i z o n  
dot net if you'd like me to send them to you.

Thanks in advance,
John Maurer
Northern VA
Zone 6b/7a

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