Roses with poor, blotchy, black or yellow leaves:
1. Remove damaged foliage and discard or burn
2. Spray on rose leaves to run off three times in the first week, then continue as per instructions below
For healthy active roses:
3. Spray rose leaves to run off every 7-14 days
Avoid wetting leaves for 10 hrs after spraying. Avoid using overhead sprinklers or splashing leaves while watering as this will encourage diseases.