CEDAR-QUINCE RUST has been observed on ground cover juniper in Delaware at this time. This rust fungus produces spindle shaped orange-red gelatinous swelling in the infected twigs but not a round gall. They can be pruned out or left alone. They will not hurt the juniper but produce spores that can cause symptoms on serviceberry and hawthorn. Cedar-quince rust on those hosts infects the fruit and twigs causing malformations with tiny white finger-like projections on the fruit surface.
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Information from Bob Mulrooney, Extension Plant Pathologist, UD.
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