Rose bush with white fuzz on leaves?

A new container grown rose bush is showing signs of disease, white fuzz on various leaves. I am looking for a home remedy as I am not a fan of chemicals. Please help the poor roses!

Rose bush with white fuzz on leaves?
From:

http://hgic.clemson.edu/factsheets/HGIC2...



"Powdery mildew is another widespread and serious disease problem of roses. It is caused by the fungus, Sphaerotheca pannosa var. rosae and produces a grayish-white powdery substance on the surfaces of young leaves, shoots and buds. Infected leaves may be distorted, and some leaf drop may occur. Flower buds may fail to open, and those that do may produce poor-quality flowers. It can occur almost anytime during the growing season when temperatures are mild (70 to 80 °F), and the relative humidity is high at night and low during the day. It is most severe in shady areas and during cooler periods.



Prevention and Treatment: Rose varieties differ in their susceptibility to powdery mildew, thus resistant varieties are the best defense against this disease see (Table 1). A film of water inhibits infection, so in years when rainfall is high during spring and summer, control measures may not be needed until the drier months of late summer. Remove and destroy diseased leaves and canes during the growing season. Rake up and destroy leaves under the plant in the fall.



If the disease is severe enough to warrant chemical control, select a fungicide that controls both black spot and powdery mildew. Fungicide sprays recommended for use in the home garden include: copper hydroxide, copper salts of fatty acids, copper sulfate pentahydrate, propiconazole, thiophanate-methyl, triadimefon, triforine or triforine + acephate %26amp; hexakis, sulfur, lime sulfur, or neem oil (clarified hydrophobic extract). Apply all chemicals according to directions on the label."