orange rust

noun Plant Pathology.

a disease of blackberries and raspberries, characterized by an orange, powdery mass of spores on the undersides of the leaves and stunted, misshapen foliage, caused by a rust fungus, Gymnoconia interstitialis.

Words nearby orange rust

orange milkweed, orange mountains, orange peel, orange pekoe, orange roughy, orange rust, orange stick, orange-peel fungus, orange-tip, orangeade, orangeburg