Is this the calm before the storm
So far so good. Last year I had a heavy infestation of cedar apple rust (car) on my crabapple and dorsett tree leaves. This year as of now I only have a few spots on the crabapple leaves. I have been reading about the car life cycle and they say the only effective treatment is before or during the infestation. This is a bit confusing to me so IÃ¯Â¿Â½m not sure how to ask for advice. Any input is welcome. I have been spraying with Serenade on an 8-10 interval this season.