04/10/2026
🌹 Downy Mildew on Roses • Spring brings warmer days, but cool, damp nights can create the perfect conditions for downy mildew.
Downy mildew can cause purple irregular patches, often accompanied by early leaf drop. Encourage good airflow, and avoid wetting foliage where possible.
If you do find Downy mildew we suggest spraying with Buxus Blight Fighter or Buxus Blight Buster