Grand Fir 



As was the case with Douglas-fir and Engelmann spruce, the average survival of 

 spring-planted grand fir (fig. 4) was greater for the 1966-67 (86 percent compared to 

 33 percent) and for the 1967-68 planting (69 percent compared to 41 percent). Fall 

 planting survival was superior in the final study series (72 percent compared to 57 

 percent). Survival of spring-planted stock was more consistently satisfactory both from 

 the standpoint of year-to-year results and of results recorded during a given planting 

 season. 



Survival variations within the fall planting season were great and followed trends 

 similar to but somewhat stronger than those for Douglas-fir. On moist sites, best sur- 

 vival of fall-planted trees was achieved by the .early plantings. Survival for trees 

 planted in the middle or late fall decreased significantly. On drier sites, the trend 

 was in the opposite direction, late fall plantings consistently survived better (71 

 percent) than the early (40 percent) or the midfall (46 percent) plantings. This 

 reverse trend was so pronounced that the dry-site plantings of grand fir in middle and 

 late fall consistently survived better than those on moist sites. 



Spring planting of grand fir was consistently satisfactory within the spring 

 planting season, except for the late-season, dry-site planting. 



13 



