Orange Rust of Brambles

Gail Ruhl, Plant Disease Diagnostician, Purdue University

Orange rust, a fungal disease of brambles appears in early spring. Leaves of infected plants may appear chlorotic (yellow). Orange rust pustules develop on lower leaf surfaces. Later in the season, the symptoms are not as easily detected. This disease is systemic (within the plant) and control measures are limited to the removal and destruction of the infected plant, including the roots. For the most thorough control, infected plants should be removed before the orange pustules begin to release spores. Orange rust occurs most commonly on blackberries, dewberries and black raspberries. Some cultivars are resistant. The disease is not a problem on red raspberry.

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Orange Rust of Brambles (Photos by Bruce Bordelon, Extension Specialist, Horticulture)	Orange Rust of Brambles Photos by Steve Mayer, Marion County CES
Orange Rust of Brambles Photos by Steve Mayer, Marion County CES

Plant and Pest Digital Library Project, Purdue University, West Lafayette, Indiana.