Plant Gardens 101

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Getting Rid Of Mildew On Your Roses

May 18, 2010 By: K. Finch Category: Gardens - Flower, Soil Needs

Mildew is every gardener’s worst nightmare, especially those who have rose bushes. The most known and most common mildew that effects rose bushes is one known as sphaerotheca pannosa. This type of mildew is powdery. The mildew is usually a white or grey powder that is usually found on rose bush leaves, shoots, buds, and the petals. Once the mildew attacks the plant, it spreads very easily and a gardener will soon notice white patches on the rose bush. The fungus eventually sucks all of the nutrients and water from the leaves, which in turn kills the leaves. The leaves eventually shrivel up and fall off of the bush completely.

The common powdery mildew is not caused by free water on the rose bush’s leaves and other parts; instead the mildew lives and thrives on hot, arid weather. In fact, watering your rose bush in the afternoon will help rid of some of the powdery mildew because it will break up the spores that are released by the mildew during the daytime. If you can afford to purchase fungicides, they are also helpful in getting rid of mildew. However, the fungicide will only be effective if you apply it at the right time. (more…)