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Periwinkle Rust



P_periwklerust

Periwinkle Rust

Usually appear in

Spring to Summer


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Caused By:-     The Fungus Puccinia vincae

Description

Periwinkle rust is caused by the fungus Puccinia vincae. It causes numerous raised chocolate brown pustules primarily on the underside of the host's leaves. Infected plants often fail to produce flowers, develop an erect habit and may become distorted. This fungus invades all parts of the plant including roots, which if left will infect new plants the following year. Humid wet conditions exacerbate this condition. Picture is a similar Puccina rust photo by Florida Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.
See also these other rusts Anemone, Antirrhinum, Bean, Bluebelle, Cedar Quince, Chrysanthemum White, Fucshia, Gladiolus, Gooseberry, Hollyhock, Juniper Pear, Mahonia, Mint, Pear Juniper, Pelargonium, Plum, Potato Internal, Quince, Rhododendron, Rose, Rust, White.


Control

Because this fungus invades the roots fungicidal control is not recomended and the whole plant should be removed and burnt. The soil area can be treated with a soil fumigant like Jayes fluid or Amarillotox although, in some countries, some of these chemicals are not sold for this purpose as they use to be.



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