I may have found the perfect bags for grapes. I'll be trying them this year. They are Organza bags. They are used for wedding gifts and are made from a thin nylon mesh with ties at the top. They may look a little "frilly", and the neighbors may give you strange looks, but they should hold up well, breath and not hold moisture, and be easy to install around the developing clusters. They come in lots of sizes and colors and are fairly inexpensive. In cool climates, darker colors may speed ripening, while in hot areas, light colors would reduce sun scald. They may work well with peaches, apples, etc. too, although I'm not sure how one would make them squirrel proof. Here is a link that might be useful: Organza Bags

You are probably going to see that all the old Univ. of Florida and younger Mississippi State Univ. PD-resistant bunch-grape releases are hard to find by mail order, and harder still to find already rooted (i.e., not merely cuttings). I searched a year or two ago myself and am still looking for some of them. If no one else answers, in the next few days I may be able to find record of where I got my "Conquistador" a year or so back. Unfortunately the very limited number of cuttings available this winter from it are already promised.

Here in the SEUS, the territory was pretty well scoured for good wild muscadines by about 70 years ago, a number of which were named and entered the trade. The University of Florida has for about 50 years been breeding bunch grapes resistant to Pierce's Disease, in large part by crossing in resistant native grapes. Florida A&M University is doing some work along these lines now. Among amateurs, two names stand out, though the individuals have more recently passed on. Dr. Dunstan (perhaps known best for his chestnut crosses) and Mr. Zehnder (see link). http://www.grapebreeders.org/Gb/Articles/Bob_Zehnder/Bob.htm

The link below has some excellent pics to help us recognize the Asian Citrus Psyllid. In case anyone might not know, the Greening disease will be the death of any citrus tree. California is not alone by any means; it is a gigantic threat to the Florida citrus, and the pest is found in Texas and Louisianna (and no doubt more areas I have not read about -- or been reported) The infected Psyllid only has to poke into one leaf and the tree will become infected and then the tree becomes a host to any other Asian Citrus Psyllid that doesn't have the bacterim to become infected and thereby the citrus trees are being infected. Paying attention to our citrus trees and becoming expert at recognizing the symptoms of the Greening disease and the pest that carries the baterim-causing disease, the Asian Citrus Psyllid, is of utmost importance. Brass