Brown Spots on Climbing Rose: Black Spot, Not Grape Fungus

Brown Spots on Climbing Rose: Black Spot, Not Grape Fungus

Grape fungi don't infect roses. Your climbing rose has black spot – yellow spots turning brown/black, favored by wet conditions.

Treatment

• Apply rose fungicide for black spot (no need to prune heavily).
• Heavy pruning of climbers can cause dieback on main canes.
• Fungicide will also help if grape vine has any fungal issues.

Note

No truly effective organic cure exists for established black spot – prevention (baking soda spray) works better than treatment.