Gymnosporangium juniperi-virginianae

Photo by University of Georgia Plant Pathology Archive, Bugwood.org

Only infects apples and cedar (Juniperus virginiana), and requires both hosts to complete its life cycle Infected fruit and leaves develop yellow-orange lesions on the surface and in some varieties spore-producing tufts also develop Lesions are raised and can crack as the fruit enlarges Stems may develop a slight swelling Galls with finger-like projections are produced on cedar hosts Spread with infected plant material or by wind dispersal

High priority pest of: Apples and pears

Pest Documents

• Cedar apple rust FS

FS: fact sheet

CP: contingency plan

DP: diagnostic protocol