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CUES: Center for Urban Ecology and Sustainability


Diseases of Spruce - Rhizosphaera Needle Cast

Symptoms of bottoms-up, inside out branch defoliation and dieback.

Black, dot-like spore producing structures in needle stomata.

Yellow mottling and discoloration of infected older needles.

Purplish-brown discoloration of infected older needles.

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Last modified on February 06, 2007