Black Hills Spruce Suffering from Needle Cast

Asked May 26, 2017, 10:53 AM EDT

Hello. Our Black Hills Spruce trees -- twenty of them, ranging from 15' to 25' in height -- appear to be losing the battle to Rhizosphaera needle cast. What can we do to help them survive? Thanks. Steve

Stearns County Minnesota black hill spruce needle cast horticulture

1 Response

The trees might be affected by Rhizosphaera but diseases with virtually the same symptoms have been identified recently. Learn more about them here:
https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/fungi-associated-...

Go here to learn more about Rhizoshpaera and how to control it:
https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/rhizosphaera-need...