Pelargonium rust is a fungal disease of zonal pelargoniums, causing small yellow spots on the upper leaf surface and dark brown pustules on the lower surface. In severe cases affected leaves turn yellow and fall.
Scientific name Puccinia pelargonii-zonalis
Plants affected Zonal pelargoniums
Main symptoms Small yellow spots and dark brown pustules
Caused by Fungus
Timing All years indoors, during summer outdoors
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