Thanks for the new photos; this is a good service. Chlorine bleach is always recommended on this site as the disinfection agent. Is there any research comparing chlorine bleach to GreenShield, a horticultural disinfectant on the market? GreenShield has several advantages. A bath of it retains its usefulness for at least a week, while chlorine bleach loses half of its potency within 5 hours, or so I was taught. GreenShield is much gentler on tools and textiles and may not produce the dangerous vapors that bleach does. Further, the advice to discard clay (and, presumably, concrete) pots doesn't make sense to me. Is this supported by research? Clay is very porous to fluids. I am reminded of the study on kitchen cutting boards conducted at the University of Wisconsin a few years back. Contrary to expectation, wood harbored many fewer bacteria than plastic. Of course, viruses are not bacteria, and wood is not clay. My point is just that conventional wisdom may mislead. Finally, I've often wondered if infected aphids transmit viruses to their clonal offspring. Does anyone know? Thanks, Pamela Harlow -----Original Message----- From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org] On Behalf Of Mary Sue Ittner Sent: Friday, August 12, 2011 7:44 AM To: pbs@lists.ibiblio.org Subject: [pbs] Virus photos Janos Agoston has added some wonderful virus photos to our wiki virus page: <http://pacificbulbsociety.org/pbswiki/index.php/…> This is kind of a long page, but look for the photos of genera in the middle. He has added Crocus, Lily, and a lot of Tulipa photos. Thanks Janos. Mary Sue