

- Oct 1, 2019
Blue Spruce & Needle Cast
One of the most glaring home landscape issues in the Midwest is the prevalence of declining and dead Colorado Blue Spruce (Picea pungens). The causal agent of the disease (needle cast) is several species of a fungus (Rhizosphaera)--other species, especially White Spruce (P. glauca), Oriental Spruce (P. orientalis), also are susceptible. The characteristic needle death and loss will start at the bottom, within the canopy, on the north as well as any shaded portions. There was