powdery mildew question - sorry!
i have 2 two year old festiva maximas that did beautifully this year. i have been careful to only water them at the bottom, but i think all the rain in our area this year has done them in. they both have signs of mildew, not too bad, but it's there.
my questions are these: should i bother to do anything (organic only) about it this year? i'm planning to put a few more white doubles in soon, and i don't want a big problem on my hands in the future. also, can i treat them with something either now or in the spring to help prevent it next year? any good tried and true methods?
thanks in advance for any advice!