Probably a fungal infection of some type. Did it look similar to the picture in the link below?

Also could be physical damage from falling twigs or from piercing/sucking insects.

Either way, nothing real serious.

Here is a link that might be useful: Botrytis

Welcome Hiddengarden--this is the first thread I've read that I noticed your name, so I'm thinking this may be the
first time you've posted! But, of course, I may have just missed seeing you till now!

Either way, Welcome to our forum. I'm sorry that I cannot help you with your question, though! I'm sure
others, much more experienced than I, surely will!

Janice

Thank you Josh. It sounds like it. Mine are in a shade house too. Also it had rained all week when I had started to notice it. I will have to subscibe to that site and read the rest. I was so scared it would wipe out all my hostas for good. I spent to much to loose them all!:)I kept thinking viruses. You've made me fill a lot better!

Your right Janice I haven't posted on here before. Thanks for the nice welcome. I'm sure I'll find a lot of info I'm looking for.
Thanks

Hi there,

Josh, your link did not work for me-- "server error"

Hiddengarden, I had what sounds to be the same problem with a couple of hosta last year. We had a very wet May to June, so I assumed it was related to the weather.

MAinMA

MAinMA...is it still not working? It works fine for me... :-/

Not for me either, Josh! I'll link what I'm seeing and see if it comes to you as it is, to us!

Here is a link that might be useful: As I see it!

Both links worked for me. I just don't want to give them $45.00/year to read the rest of the article on it. :) Call me cheap, but that there is hosta monies!

Josh, Thanks for asking re the link. It is still not working for me, but not to worry as I right clicked it to get the properties and thus address and was able to find your article. I'm not sure that Botyris is the fungus I saw in my yard, but I am fairly certain that it was a fungal infection due to our wet, not to mention dark weather last year. Thanks for posting. M-A