thornless blackberries

Orange Rust on Thornless Blackberries

Recently in Northeast Ohio, the fungal disease known as Orange Rust is beginning to rear its unique, but strange symptoms on brambles, which are also known as cane berries.  Specifically, this fungus most often infects black and purple raspberries and sometimes is found on thornless blackberries, but is not known to infect red raspberries.

For me personally, this is the first time in my 24 years as an Extension Educator, that I have seen this disease on thornless blackberries.  Most often, this fungus is evident on either thorned blackberries or purple raspberries.  It is...

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Authors
Erik Draper