Hi,
Some of the information on the Hosta Library is getting rather old. They used to say a year but later research indicates that perhaps the time frame should be much longer and maybe never. Check out
http://www.perennialnursery.co... You'll have to join to participate in the forums, but there's no charge to do so.
If you plants have been in soil for only a very short time, you are unlikely to have a problem and most of your plants are probably OK. It's only the Frances Williams that looks possibly suspicious to me. Isolating it and cleaning your tools well should keep your other plants safe while you assess it in future.
I've had 4 HVX infected plants over the years. The first was a 'Lakeside Looking Glass' that did not have typical symptoms but I sent it back to the nursery from where it came and they tested it and told me it tested positive for HVX. It just looked very sick to me. The next two, 'Gypsy Rose' and 'Mountain Snow' had typical symptoms. And the last was probably infected when I got it in 2006, but didn't show symptoms that caused me to test it until 2013 and even then I was rather surprised when it tested positive. All my infected plants came from a quality nursery but at the height of the infection in 2006-2007. Now, most quality nurseries are testing their stock or buying only from suppliers that test regularly. The stock from box stores is quite different and the rate of infection is much higher. You can still get nice plants from such stores, but it's wise to watch them carefully for a couple of years.
