Powdery Mildew of jasmine

Disease Information

Powdery Mildew

Symptomsand damage

Like thousands of other ornamental plants, jasmine can become infected with any one of several fungi responsible for powdery mildew. As the name implies, powdery mildew makes the jasmine`s foliage and stems look as if they have been sprinkled with baby powder. The powdery substance is made up of spores and mycelium. Powdery mildew often attacks new growth in spring, deforming buds, flowers, leaves and shoots.


If possible, prune nearby vegetation to provide the jasmine with more sunlight. Do not overwater or overfertilize the plant. Apply protective fungicides containing sulfur or potassium bicarbonate before powdery mildew symptoms appear. If powdery mildew is already present, use an eradicant fungicide such as neem, jojoba or horticultural oil. Fungicide containing myclobutanil works as both protectant and eradicant.


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