powdery mildew is one of the most dangerous fungal diseases on phlox, phlox paniculata. berlin, germany

green background blooming ascomycete fungi beautiful berlin bloom blossom botanical botany bouquet bush colorful dangerous fungal diseases family polemoniaceae flora floral flower flowering plant garden germany grass mildew moss pink nature orange order outdoor paniculata phlox plants powdery purple red white romance romantic season species bright most erysiphales from erysiphaceae