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Symptoms & Conditions for disease development

Clematis serves as the intermediate host for the rust fungus and infection does not result in any serious damage, apart from the unattractive appearance that results. In late spring, yellow spots form on the leaves and tepals which in time turn orange as fungal spores are produced. By early summer the lesions dry up after the spores have been released.


Control Methods

It is not normally necessary to spray against rust diseases.

Text ©2007 Paul Margot