Leslie - That did intrigue me about Raspberry Beret not being the rust bucket it was in the Spring. Could it have to do with the health of the plant? It was in a nursery pot, now it is planted in the raised bed. Could a happier, healthier plant be better able to fight against rust? I have to wonder ....
I have read though, that the healthier the foliage the worse the rust attack. Rust does like healthy leaves, which is what it thrives on.
Sure is confusing ....