North American Fruit Explorers mailing list at ibiblio

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

Bleeding doesn't hurt vines.  It's mostly water that the roots are pumping up from the ground.  Dr. Mark Kliewer at Davis did an experiment in which vines were pruned to allow them to bleed, and were done the usual way.  The bleeding vines produced something like five gallons of fluid, but had no measurable difference in growth or yield that season.
That is written up in The Grape Grower, too.
-Lon Rombough
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. 
For even more grape lessons, go to  http://www.grapeschool.com
For growing supplies and more;  http://www.grapegrowersolutions.com

On Feb 11, 2007, at 10:34 AM, list@ginda.us wrote:

Lon, or others with grape experience:

what's the best time of year to prune grapes in cold climates?  I've  
usually waited until early spring, which works okay, but the wounds  
bleed an awful lot when the sap starts to flow.  I was wondering if  
pruning earlier (like now) might reduce that a bit.

thanks,
Ginda
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