Fig. 193  Infection is restricted to new foliage.	Fig. 194  White blisters on current year's needles. Note chlorosis around blisters.

Distribution:  Throughout B.C. 

Host Susceptibility: All native spruce species of all ages are susceptible.

Signs & Symptoms: The current years' needles, and occasionally cone scales, develop prominent white blisters filled with bright orange spores throughout the summer. The areas on the needle where blisters originate are chlorotic and contrast with the remaining healthy green portions. 

Damage: The current year's needles may be almost completely defoliated. Growth loss may result, but mortality is rare. This rust is most severe adjacent to bogs where the alternate host (Labrador-tea) is found, and during periods of moist weather.