Rpr, wow, that is super helpful! There is a nursery in Canada that ships roses to the U.S. and they have many beautiful roses that would not need to be covered in your area. They are all disease resistant, and would not need spray at all. Palatine is a favorite of many of the people on the rose forum because the roses they send out are huge.
https://palatineroses.com/
This has been a bad year for blackspot in my garden. It is easy to tell which roses are truly resistant, after getting 10.5" rain in one week. The Palatine roses, mostly Kordes and Fryer, are 90% clean!
