Pucciniastrum goeppertianum

Alternate hosts: Vaccinium spp.

Photo by Gary Chastagner, Washington State University.

Signs & Symptoms

Photo by Gary Chastagner, Washington State University.

  • Possible yellowing areas on infected needles
  • White, tube-like fruiting structures on the underside of infected needles

Where to Look

Photo by Gary Chastagner, Washington State University.

  • Trees near alternate hosts (Vaccinium spp. such as huckleberry, wild blueberry, and cranberry)

Similar Symptoms As

Photo by Gary Chastagner, Washington State University.

  • Current season needle necrosis
  • Uredinopsis needle rust

Scouting

Alternate hosts: Vaccinium spp. (Photo by Ralph Byther, Washington State University)

  • Observe trees in areas near alternate hosts.
  • Look for yellowing (often banded) on current season needles.

Management Options

  • Remove and destroy alternate hosts near plantation.
  • Spray protective fungicides (if needed) on new developing shoots.

Host Susceptibility

host susceptibility graph

  • High susceptibility: Shasta fir, Noble fir
  • Medium susceptibility: Grand fir

Management Calendar

management calendar

  • Look for white, tube-like structures on the underside of infected needles: All year round
  • Check for alternate hosts (Vaccinium spp.): Mid-June through November
  • Use fungicides to protect new growth: Mid-May through Mid-June
  • Remove and destroy alternate hosts: Mid-August through September