I had a little of that going on about a month ago, it had been so cool and wet that the poor plants never got a chance to get off to a good start. I ripped off all the affected leaves, fertilized w/ organic fertilizer and the smelly fish stuff and they're looking a lot better. They don't even begin to compare to my friend's who lives 1/2 mile away and has beautiful soil (unlike me). I've also noticed that we have very few ladybugs this year. Last year they were everywhere. Oh, if you take a sample into a nursery for a diagnosis, be sure to put it in a baggie so it doesn't pass anything on to their stock.