Thank you for contacting the UVM Master Gardener Helpline with your question about your rose.

In order to diagnose the problem with your rose, we would need good/clear images of your entire plant including any insects that might be impacting your plants health.  Include a close up of the specific damage occurring including an area which might show transition from the unhealthy to healthy tissue. Check the underside of the leaves for damage/pests. Completing the helpline intake form would also be helpful: https://www.uvm.edu/sites/default/files/Extension-Community-Horticulture/UVM_Extension_Master_Gardener_Helpline_Intake_fillable_form.pdf

In the meantime, I can point you to a few articles that you might find helpful:

“Everything You Need to Know about Roses” – published by University of Illinois Exension: https://extension.illinois.edu/roses, specifically the “Managing Diseases and Pests” section: https://extension.illinois.edu/roses/managing-diseases-and-pests

“Rose: Identify and Manage Problems” published by the University of Maryland Extension: https://extension.umd.edu/resource/rose-identify-and-manage-problems/

“Pests of Roses” published by North Carolina Extension: https://content.ces.ncsu.edu/insect-and-related-pests-of-shrubs/pests-of-rose

Rose Care published by the Univeristy of Illinois Extension: https://extension.illinois.edu/roses/care

I hope this information helps you treat your rose. If you would like to send us some pictures and the intake form, we can give you more specific information.

Good luck

We found another article you might find helpful:

University of Tennessee Institute of Agriculture publication: Rose Diseases: Identification and Management:

https://plantsciences.tennessee.edu/wp-content/uploads/sites/25/2021/11/UT-Extension-Rose-diseases-Identification-and-management-W833.pdf