Chrysanthemum white rust

Chrysanthemums may be severely weakened by a disease known as white rust. It is no longer a notifiable disease when found in gardens but can be bad news for the gardener.

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white rust

Quick facts

Common name Chrysanthemum white rust
Scientific name Puccinia horiana
Plants affected Chrysanthemum
Main symptoms Sunken yellow or brown spots on upper leaf surface, buff/white pustules on lower surface
Caused by Fungus
Timing Late summer and autumn

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