Gardeners face a variety of landscape issues that can damage plants, including powdery mildew, a common fungal disease that affects many ornamentals, shrubs and trees. Plants such as roses, lilacs, ash, crapemyrtle, oak, photinia and zinnias are especially susceptible, and severe infections can cause significant damage.
The severity of powdery mildew depends on several factors, including the plant variety, plant health, timing of the infection and weather conditions during the growing season. Typically, when detected early, the disease can usually be managed effectively before serious damage occurs.
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