George...

There are many things that cause the problems you've mentioned in your post. Since you mention that other roses nearby do not have the same problems, there are a couple of things to check, starting with drainage and soil. Both can vary very quickly within a few feet.

Next, did you know that you can actually stress a rose to where it is more disease prone by how you prune the rose ? You might want to read the article about 'Iceberg' written by Kim Rupert in the HMF Ezine archives. Near the bottom of the article, he writes about how a rose is pruned can impact the health of the plant. (Click EZINE on the navigation bar at the left;' click ARTICLES BY AUTHOR, and click the title "Poor Old Iceberg" to find the article.)

Altho' he is writing about 'Iceberg', in my experience, this is true for other roses, too, in my climate.

Smiles,
Lyn