PATHOLOGY

Detailed explanation-1: -Spray against black spot with a fungicide. Follow the instructions, treating the new foliage in early spring, with further sprayings at regular intervals through the season.

Detailed explanation-2: -Begin active treatments with Daconil® fungicide at the very first sign of disease to stop black spot and limit its damage. Treat every seven to 14 days or as long as weather conditions warrant, and mark your garden journal to remember to start preventative treatments early next year.

Detailed explanation-3: -Fungicides containing tebuconazole, tebuconazole + trifloxystrobin and triticonazole are recommended to keep control of black spot.