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Plant Diseases
Red spot (Measles) of Peony

Peony plant

Leaf spots

Infected flower
 

 
PathogenCladosporium paeoniae
HostsPaeonia
Symptoms: Initial symptoms typically develop after bloom. Small reddish circular spots form on the foliage, lesions may coalesce making blotchy patches. The upper surfaces of infected leaves become a dark purple color, while the lower surface is brown. Foliage that is infected before it is fully expanded may become slightly distorted. Infection of stems causes reddish streaks. 
Spread: This fungus survives on dead plant debris and in soil. Spores are spread by rain or wind. 
Management: Remove and destroy infected plant material. Avoid overhead irrigation or carefully time irrigation such that the duration of leaf wetness is minimized. 

Diagnostic Services
Diagnostic Services

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