About a 1 1/2 months ago I ordered and received a live raspberry plant from Burpee. Burpee lists the plant as Crimson Night Raspberry PPAF. My understanding is that this raspberry is a variety released by Cornell about 3 years ago.
When I received the plant I transplanted it to a larger container to allow it to recover & develop more before planting it in a permanent location. The first few weeks everything seemed to be fine. But then leaves started curling and eventually dying (pictures below). I have tried pruning the affected leaves off, but the problem still spreads to other parts of the plant.
This is actually my second time trying to grow this raspberry. The first plant I received eventually died and Burpee replaced it. But now the replacement appears to be dying from whatever killed the first plant.
I have never had to worry about plant diseases before so I am not at all sure what to do next. I am hoping someone here will be able to identify the problem and/or suggests ways I can either stop it or at least prevent it from killing my plants in the future.
I am located near Ithaca, NY in the United States, zone 5-ish.
Note: Click on photograph for larger size.