Plants infected with rust have dry reddish, yellowish, or orange spore masses or pustules primarily on the lower surface of leaves. Bean pods may also show symptoms.
Solutions
Space plants to allow for adequate air circulation. Avoid overhead sprinklers, as rust spores are spread by wind and splashing water. Dispose of infected leaves and shoots as soon as they appear. Fungicides, such as sulfur, applied in the spring can reduce some rust diseases. Some varieties may show resistance.
The pesticide information on this page may become out of date as products and active ingredients change or become unavailable. Some of the pesticides listed are only available for use by licensed pesticide applicators. No endorsements of named products are intended, nor is criticism implied of products not mentioned.
