Ask-a-Dave's-Gardener: sephirine drouhin climbing rose dying! Help! 😢, 3 by vaneperez

vaneperez wrote:
Hi I recently purchased a sephirine drouhine climbing rose to train on my fence, after purchasing it and before planting it I noticed it was getting black spot disease. After asking here I learned that this rose is prone to this disease so I went out and bought something for black spot and now it's dying! The next day after I applied this product the rose was drooping all the petals plus the rose buds I kept watering it in hopes that it would come back, all the buds still opened but not all the way and now it's drying up. Should I continue to care for it or should I cut my losses? It's a beautiful climbing rose but I'm wondering if it's going to be more work than its worth, plus I'm new at this so maybe I'm in over my head. Any help us appreciated!