Rust (Ornamentals)

Rust Ornamental

Thel Dutky, University of Maryland, Bugwood.org

Description

Ornamental Rust is a disease that affects garden plants in wet and humid conditions. 

Damage

Ornamental Rust is identifiable by powdery, orange to red colored spores on the underside of affected leaves. Also look for yellowish spots on the upper leaf surface. 

Cultural Solutions
  • When available, plant resistant varieties.
  • Avoid overhead watering.
  • Prune to increase air circulation and remove infected leaves as soon as you see them. Practice good sanitation, disposing of prunings and fallen leaves in winter to prevent reinfection and mulch.

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