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insects and rose bushes #798008

Asked June 27, 2022, 8:45 AM EDT

loss of leaves and insect infestation on established Knock Out roses

St. Clair County Michigan

Expert Response

Would it be possible for you to attach a few photos to this message?  That really helps our experts provide a solid answer to your question.
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On Jun 27, 2022, at 8:53 AM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied June 27, 2022, 3:17 PM EDT

Hello,

Although Knock Out Roses are considered disease resistant and easy care, if they are under stressful conditions, they can succumb to several diseases, such as powdery mildew, black spot, gray mold and Rose Rosette disease and be attacted by insects. Learn how to care for Knock Out Roses here:https://www.knockoutroses.com/faqs

Thank you for sending the pictures but it is difficult to see what could be the problem. I wonder if you could send close up pictures of the stems, leaves and flowers. I assume the leaves and stems have been eaten? But I cannot see them well enough to provide a diagnosis.

Thank you. I look forward to receiving more pictures.

Thank you for contacting Ask Extension.


An Ask Extension Expert Replied June 28, 2022, 11:05 AM EDT

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