Will you be taking a chance and planting impatiens this year? I think I will replace what I usually plant with New Guineas and begonias.
Here is a link that might be useful: downy mildew
I with you on this one. Taking a pass. What I find disturbing is the flower nurseries never acknowledged there was a problem last year. I understand they are in the business to make money, but if it was me I would have had a sign up......but then again, I have a conscience & like to sleep at night.
I'd be willing to give them a try if there was no chance that it would contaminate the soil for the future. I do love impatiens and they are such little workhorses. Not this year, for me.
I always have self sowers, we'll see how they do. A landscaper friend says he thinks last year's problems were due to not enough cold temps. to kill it