I was surprised because I thought it had to be warm at night but it has actually been a lot cooler this year. It's been a wet summer and it rains at night a lot at night so I will have to come up with a game plant for next year. I only have one kind of spray so I hope it works!
You said before that you rotate your sprays and you have picked out three different kinds, right?
To my knowledge I only have a couple, like two rust prone daylilies and they do not have it. So is this a new crop of prone daylilies? or a lack of knowledge when buying. I assumed if it does not say it is susceptible then it must be ok, but maybe not. Maybe it means they do not know! LOL.